Ticket #1803: HISTORY.txt

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SAGE-2.9.3: Janury 6th, 2008
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This release is almost the same as sage-2.9.2, but has a few minor 
build fixes and one memory leak fix.  Also I stripped out two 
nontrivial pre-compiled Java programs (surfex in Singular and Java3d) 
that had snuck in. 

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SAGE-2.9.2: Janury 5th, 2008
#####################################################################


Hello folks,

Sage 2.9.2 has been released. It is available at

           http://sagemath.org/download.html

The following people contributed to this release:

 * Michael Abshoff
 * Francois Bissey
 * Tom Boothby
 * Robert Bradshaw
 * Burcin Erocal
 * David Harvey
 * Josh Kantor
 * Willem Jan Palenstijn
 * R. Rishikesh
 * William Stein

Cheers,

Michael Abshoff (release chair), William Stein

* Major Features, New Spkgs and Bugfixes

The 2.9.2 release was mostly a bug fix release, specifically aimed at 
the  AMS meeting in San Diego. The main new features are

 * Much, much improved 3D plots by the integration of jmol 
   (this involved substantial new code by Robert Bradshaw and 
   William Stein)
 * Many build fixes and build improvements

We closed 33 tickets, mostly because we were very, very conservative 
for this release. For details see below or our tracker at

http://trac.sagemath.org/sage_trac/milestone/sage-2.9.2

Reviewers: William Stein, Mike Hansen, David Harvey, Robert Bradshaw
           Michael Abshoff; apologies to anybody I forgot.

Feeback: Jaap Spies, apologies to anybody I forgot.

* Known Issues with 2.9.2

#1497: ATLAS can fail to build on multi core Linux boxen when 
       power management is activated. This is a known ATLAS 
       issue with workaround: disable power management

* Upcoming Releases

The next release will be 2.10, chaired by Michael Abshoff. The release 
should happen in about a week from the release of 2.9.2. Planned 
features are:

 * Update a lot of spkgs to the current release
 * Solaris 10 support in 32 bit mode on Opteron/x86
 * FreeBSD support out of the box 

* Doctesting Coverage 

For 2.9.2:

Overall weighted coverage score:  35.2%
Total number of functions:  18100

Compared to 2.9.1.1 this is a decrease by 0.1%.

* About Sage (http://www.sagemath.org)

Sage is developed by volunteers and combines 71 open source packages.
It is available for download from sagemath.org and its mirrors in
source or binary form. If you have any questions and/or problems
please report them to the google groups sage-devel, sage-support,
sage-forum or sage-newbie. You can also drop by in #sage-devel in
freenode.

* Closed Tickets:

Merged in final:

#1589: Robert Bradshaw: jmol -- using via https is a pain in the butt

Merged in rc1:

#1302: R. Rishikesh: fix bug in laurent_series integration
#1449: Tom Boothby: make shift-enter work on OSX
#1482: David Harvey: fix xgcd suboptimal output
#1576: Robert Bradshaw: add implicit multiplication [not enabled 
       per default for now]
#1596: Robert Bradshaw, Willem Jan Palenstijn: preparser hangs 
       if line starts with '...'
#1661: Tom Boothby: add click-to-evaluate button in notebook
#1670: William Stein: fix various plot3d doctest failures
#1681: Robert Bradshaw: fix serious bug when raising complex(0,1) 
       to the power of the Sage integer 2.
#1683: Willem Jan Palenstijn, William Stein: sage -t cubegroup.py& 
       stops instead of running in background [workaround for 
       Linux only for now]
#1687: William Stein: "make distclean" doesn't delete test.log
#1688: William Stein: give option to set the libgfortran.so

Merged in rc0:

#1535: Robert Bradshaw: jmol meshes are always smoothed
#1615: Michael Abshoff: mpfi -- build is seriously broken on 
       at least one system
#1643: Josh Kantor: if SAGE_FORTRAN is set do not link 
       the binary to sage_fortran.bin
#1670: Robert Bradshaw, William Stein: many more updates 
       for jmol/3D plotting
#1674: Willem Jan Palenstijn: memleak in 
       pAdicCappedRelativeElement.__pow__
#1675: Willem Jan Palenstijn: memleak in 
       pAdicCappedRelativeElement._set_from_Rational
#1676: Willem Jan Palenstijn: memleak and unused variable 
       in pAdicCappedAbsoluteElement
#1677: Michael Abshoff, Robert Bradschaw: trivial-to-fix 
       mistake in the rubiks spkg

Merged in alpha0:

#1471: Michael Abshoff: moving a sage install breaks clisp
#1536: Robert Bradshaw: jmol useable from notebook
#1591: Michael Abshoff: immediately terminate the build on 
       Cygwin, Solaris
#1603: William Stein: upgrade pari to 2.3.3
#1635: Michael Abshoff: Singular.spkg relatated: lib->LIB 
       link issue on OSX
#1644: Michael Abshoff: Enable email notification of trac 
       tickets
#1654: Francois Bissey, William Stein: excise pysqlite
#1658: Willaim Stein: sage -bdist on osx should output a dmg 
       instead of a tar.bz2
#1664: Robert Bradshaw: update jmol to 11.5.2
#1665: Robert Bradshaw: zip related jmol files
#1666: Robert Bradshaw: jmol cylinders should use the draw 
       command rather than be triangulated as a pmesh
#1667: Burcin Erocal: coercion fixes for PolyBoRi
#1671: Michael Abshoff: doctest: fix shapes.pyx fallout from 
       the bundle merged in #1666


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SAGE-2.9.1.1: December 25th, 2007
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Fix that jmol wasn't installed during the Sage build process.


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SAGE-2.9.1: December 24th, 2007
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SAGE-2.9.1 -- Holiday Edition

Release Manager: Robert Miller

summary:
rc3: fixed mwrank importing, and
William Stein - check types for plotting

rc2: four spaces -> tab in spkg/standard/deps, and
#1558: Joel Mohler: more NTL wrapping, coefficient access and 
       factoring
#1564: Robert Bradshaw, William Stein: 3d graphics via jmol!
#1580: Robert Miller: notebook shows graphics out of order

rc1: just fixed spkg/install and spkg/standard/deps from #1505

rc0:
#405: Mike Hansen: set rows and cols of matrices
#649: Robert Bradshaw, Mike Hansen: create a special symbolic 
      matrix data type
#857: Michael Abshoff, Robert Miller: updates to COPYING.txt
#1106: Mike Hansen: speed up dense matrix comparison
#1448: Mike Hansen, ref. David Harvey: iterate over a matrix 
       space
#1459: Mike Hansen: make notebook ? behavior like command line 
       behavior
#1505: Martin Albrecht: make M4RI a shared library
#1533: Robert Bradshaw: finish converting java3d to an spkg
#1566: Mike Hansen: Symbolic substitution infinite recursion
#1586: Robert Miller: preparser.py doctest failures

alpha3:
#668: Michael Abshoff: numerical noise doctest in calculus.py
#670: Michael Abshoff: numerical noise doctest in piecewise.py
#924: William Stein: the matplotlib spkg patches break underlying 
      functionality
#1561: Nick Alexander: add ._matrix_() and .transpose() 
       to vector/FreeModuleElement.
#1579: Michael Abshoff: memleak in GSL's ComplexDoubleVector
#1582: Robert Miller: 2.9.1.alph2: doctest failure in 
       sage/graphs/graph.py with x86 Linux
#1584: Robert Miller: calculus.py doctest failure on Fermat

alpha2:
#1064: Robert Miller: permutation __call__ type check
#1175: Michael Abshoff: circular link in sage/local/lib/python2.5
#1233: Michael Abshoff, John Cremona: mwrank wrapper causes crashes 
       and error on non-minimal curves
#1240: Michael Abshoff: wrong unix rights of some files
#1424: William Stein: threaded map function, as requested by Peter 
       Doyle
#1546: Michael Abshoff: Update FLINT.spkg to 1.03 release
#1556: Yi Qiang: make usernames legible on bad login name to notebook
#1562: Dan Drake: inverse trig
#1563: Robert Miller: ./sage -r main
#1569: William Stein: solve() fails if one list element is True
#1572: Michael Abshoff: memleak in graph_fast.pyx
#1573: Michael Abshoff: Mismatched free()/delete/delete[] in wrap.cc

alpha1:
#1139: Mike Hansen: nintegral raises helpful error if precision is 
       too high
#1318 & #1319: Robert Miller: eigenspaces/charpoly of a graph
#1363: Carl Witty: sqrt for complex intervals
#1380: Martin Albrecht: R.<x,y>=QQ[]; x.subs(x=1/y); now works
#1421: Paul Zimmerman, Craig Citro: finer control in ECM interface
#1432: William Stein: plotting examples
#1540: Michael Abshoff: remove linux elf binaries during lapack build
#1542 & #1543: Craig Citro:  R/rpy build issues fixed
#1548: Michael Abshoff: numerical noise in doctests in calculus.py
#1551: Robert Miller: is_subgraph
#1555: bill.p, William Stein: typos in documentation


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SAGE-2.9: December 16th, 2007
#####################################################################

Hello folks,

Sage 2.9 has been released. It is available at

           http://sagemath.org/download.html

The following people contributed this release:

 * Michael Abshoff
 * Martin Albrecht
 * Robert Bradshaw
 * Tom Boothby
 * Ondrej Certik
 * Craig Citro
 * F. Clark
 * John Cremona
 * Alyson Deines
 * Burcin Erocal
 * Jan Groenewald
 * David Harvey
 * Mike Hansen
 * Josh Kantor
 * Robert Miller
 * Bobby Moretti
 * Rich Morin
 * Bill Page
 * Willem Jan Palenstijn
 * Yi Qiang
 * David Roe
 * William Stein
 * Carl Witty
 * Paul Zimmermann

Cheers,

Michael Abshoff (release chair), William Stein

* Major Features, New Spkgs and Bugfixes

We achieved most of the goals we set ourselves for 2.9. The major
changes compared to 2.8.15 are:

 * Integration of PolyBoRi
 * Integration of ATLAS BLAS/Lapack on non-OSX
 * Integration of R 2.6.1 and rpy
 * Update to FLINT 1.02
 * Update to Symmetrica 2.0
 * Much faster permutation arithmatic
 * Very fast rubik's cube solvers
 * Many build fixes applied and many bugs squashed

We closed a total of 110 tickets, for details see below or our 
tracker at

http://www.sagetrac.org/sage_trac/query?status=closed&milestone=sage-2.9

* Known Issues with 2.9

#1137: Import gd fails to import on OSX 10.4 ppc. Any attempt 
       to fix this breaks other applications on different OSX 
       flavors. We hope to fix this in 2.9.1.
#1497: ATLAS fails to build on FC7, Dual core [known ATLAS 
       issue with workaround: disable power management] 

* Upcoming Releases

The following releases are planned for the rest of the year:

 * 2.9.1: chaired by Robert Miller, bug fixes, release 
          planned about a week from now
 * 2.9.2: chaired by Michael Abshoff, bug fixes, release 
          planned about two weeks from now

2.9.2 will be the release we plan to distribute on DVD at the AMS 
meeting, so we are shooting hard for an excellent release.

* Doctesting Coverage 

For 2.9:

Overall weighted coverage score:  35.3%
Total number of functions:  17947

Compared to 2.8.15 this is an increase by 0.5%.

* About Sage (http://www.sagemath.org)

Sage is developed by volunteers and combines 71 open source packages.
It is available for download from sagemath.org and its mirrors in
source or binary form. If you have any questions and/or problems
please report them to the google groups sage-devel, sage-support,
sage-forum or sage-newbie. You can also drop by in #sage-devel in
freenode.

* Closed Tickets:

Merged in rc3:

#1529: William Stein: update install_scripts to also install R script.
#1530: William Stein: building tut.tex is currently broken
#1531: Michael Abshoff: fix doctest failure sage/calculus/calculus.py
#1532: Josh Kantor; Michael Abshoff: Error out with intelligent
       message if ATLAS tune failed

Without tickets:

William Stein: update libpng.spkg
William Stein: don't let "sage -ba" start sage
William Stein: link libcsage.so against atlas on non-OSX
William Stein: link IML against atlas on non-OSX
Willaim Stein, Michael Abshoff: Various doctest fixes
Michael Abshoff: link LinBox against atlas on non-OSX
Michael Abshoff: remove forced check from FLINT.spkg

Merged in rc1/2:

#1258: Willem Jan Palenstijn, Robert Miller: additions and changes 
       to linear_codes
#1457: William Stein: "BUG: Rational.__pow__ called on a non-Rational"
#1464: Robert Miller: binary code canonical labels & automorphism
       group generators
#1503: William Stein: formal function calls don't coerce correctly to
       Mathematica
#1511: Robert Bradshaw: Export 3d objects in jmol format
#1527: William Stein: doctest R with "import rpy" 
#1528: William Stein: make "sage -R" run R.

Merged in rc0:

#444: Robert Bradshaw: solve the rubik's cube fast!
#553: Mike Hansen, William Stein: calling of symbolic expressions is
      sometimes ridiculous
#1077: Yi Qiang: DSage restarts two workers after timeout, various 
       other fixes and improvements
#1119: Martin Albrecht, Robert Bradshaw: EllipticCurve.random_element
       for char=2
#1137: Robert Miller: matrix visualize_structure is completely broken
       on OSX [later reverted]
#1162: Paul Zimmermann, Carl Witty: fix issues in RealField <-> RQDF
       conversions
#1183: David Roe, William Stein, Alyson Deines: Residue fields are
       broken. This patch set also fixes #1242 and #1185
#1232: Craig Citro: bug in modular symbols over GF(2)
#1237: David Roe: E.torsion_order() fails on curves with big
       coefficients!
#1239: Robert Bradshaw, John Cremona: Wrap Simon's new gp two 
       descent code
#1393: Robert Miller: is_integral_domain may return incorrect answer
#1395: Mike Hansen: notebook(directory="foo/") misbehaves
#1401: Mike Hansen, William Stein: deprecate A[n] for n a matrix
#1404: F. Clark, William Stein: bug in %latex feature in the notebook)
#1407: William Stein: deciding that generators don't generate an order
       in some extensions can be way way too slow.
#1423: William Stein: bug/issue in python.eval from sage
#1425: Mike Hansen, William Stein: wrong automatic simplification of
       pow
#1442: Mike Hansen: fix wrong statement in calculus.py
#1447: Burcin Erocal: Polybori permissions issues [fixed in 
       polybori-0.1-r5.spkg]
#1454: William Stein: Change the prompt for sage -sh
#1460: William Stein, Carl Witty: bug in float( ... ) conversion in
       calculus
#1461: William Stein: implement general subs_expr for calculus
       expressions
#1472: Josh Kantor: gnuplotpy optional package doesn't work with numpy
       [updated optional spkg]
#1473: Robert Bradschaw: make Java3D usable from command line as well
       as notebook 
#1480: William Stein: implement P.show() for mathematica elements --
       nice mathematica graphics in the sage notebook!
#1491: William Stein: improve conversion from interface to sage
       objects (i.e., the dot sage method)
#1494: William Stein: bug coercing from maximal order of cyclotomic
       field into cyclotomic field
#1502: Mike Hansen: calculus -- bug in argument ordering for formal
       functions
#1506: William Stein: NTL.spkg - dumb intentional error during the 
       build
#1507: William Stein: document how to use pylab / matlab style
       plotting from sage
#1513: Michael Abshoff: FLINT install uses make -B, which isn't an
       option on (slightly) older make versions
#1515: Robert Bradshaw: fix ParametricSurface bug
#1518: William Stein: cache computing order of elliptic curve over
       finite field
#1519: William Stein: hg problem applying tickets via trac url: remove 
       characters after "?" from name
#1520: Michael Abshoff: prebuilt 2.9-alpha7 osx ppc binary has
       hardcoded paths

Merged in alpha7:

#1340: Robert Bradshaw: %cython broken if directory name contains
       spaces
#1398: Mike Hansen: Functions on integers which are not 
       object-oriented
#1462: William Stein: make sure that not to update the timestamp 
       cache if compilation fails
#1487: Michael Abshoff: ATLAS breaks with parallel make
#1488: William Stein: fix output of symbolic vectors
#1489: William Stein: serious bug in calculus maxima parsing
#1490: Michael Abhsoff: fix numerical noise doctest failure in
       numerical/test.py
#1492: Yi Qiang: update sqlite.spkg to 3.5.3.p1 [this also closes
       #1152, #1202]
#1493  Burcin Erocal: polybori doesn't free m4ri data on exit
#1497: Josh Kantor: Configure ATLAS properly for 32 bit user space 
       on 64 bit CPU
#1499: Michael Abshoff: fix import issues related to ATLAS BLAS on
       non-OSX
#1500: William Stein: solve_mod -- implement solving modulo n in sage
#1501: Josh Kantor: udpate cvxopt to use ATLAS on Linux

Merged in alpha6:

#469: Burcin Erocal: Add BoolenPolynomialRing to global namespace. 
      With this patch PolyBoRi's integration should be finished
#823: Josh Kantor, Michael Abshoff: make atlas standard in Sage
#1430: Josh Kantor: sparse eigenvalues and splines [scipy sandbox]
#1434: Josh Kantor: cut sandbox directory out of scipy spkg
#1462: William Stein: speed up "sage -b" -- don't do anything cython
       stuff if no .pyx, .pxd, or .pxi file changes 
#1463: William Stein: polymake package has wrong cddlib,gmp versions
#1479: William Stein: Fix doctest failure fallout from #1296

Merged in alpha5:

#469: Burcin Erocal: partial merge of the PolyBoRi wrapper, updated 
      PolyBoRi.spkg [still some code to merge, so disable doctests 
      for now, BooleanRing is missing]
#1189: Ondrej Certik: SymPy <-> SAGE automatic conversion
#1235: William Stein: doctest fixes for 32 bit Linux
#1296: Robert Bradshaw: Fast permutation arithmatic [with bugfixes 
       and debugging by William Stein, Michael Abshoff, Carl Witty 
       and Mike Hansen - this was a real team effort :)]
#1394: Robert Miller: make plot documentation readable in graph.py
#1450: William Stein: update the error message for using maple/
       mathmatica from sage
#1453: William Stein: fix cython dependency computation for new files
       [later reverted, due to issues with #1366]
#1455: Michael Abshoff: Fix OSX doctest failures due to numerical
       noise

Merged in alpha4:

No tickets, but build fixes for gfan and R by William Stein

Merged in alpha3:

#1366: Bobby Moretti, William Stein: speed up "sage -br" -- make it
       cache the dependency diagram instead of computing it every 
       time [later reverted]
#1411: William Stein: pdate the README.txt file included in Sage
#1416: William Stein, Mike Hansen, Josh Kantor: make R standard 
       component
#1427: Josh Kantor: rpy doesn't build on osx 10.4
#1433: William Stein: Fix some documentation typos pointed out by 
       Rich Morin
#1436: Michael Abshoff, Bill Hart: Update FLINT.spkg to 1.02 relase
#1437: Michael Abshoff: fix spkg-check in FLINT to work "stand alone"
#1444: William Stein: fix some serious hard-coding issues that break
       all binary installs
#1445: Mike Hansen: symmetrica's longints need to be converted

Merged in alpha2:

#469: Burcin Erocal: add PolyBoRi.spkg [integration patch still 
      missing]
#1164: Mike Hansen: Error in tutorial documentation about %hist
#1167: Mike Hansen: Spelling errors in documentation
#1182: Mike Hansen: update freetype.spkg to 2.3.5
#1235: William Stein: bug solving equations using maxima
#1243: Mike Hansen: Minor spelling mistakes in documentation
#1267: Mike Hansen: documentation for piecewise does not show up in
       notebook
#1288: Mike Hansen: misformating of some of the reference manual in
       live version; also out of date
#1324: Carl Witty: 2.8.14: doctest failure in sage/rings/real_rqdf.pyx
       on FC6, x86-64
#1348: Mike Hansen: Incorporate Jan Groenewald's documentation fixes
#1378: Mike Hansen: add ssh-client (i.e., ssh-keygen) as a required
       package in various places in the docs
#1412: Tom Boothby: creating directory in notebook cell #x makes
       evaluation of cell #x hang
#1417: Mike Hansen: update symmetrica.spkg to 2.0
#1420: Mike Hansen: documentation typo
#1435: Michael Abshoff: Update FLINT.spkg to 1.01

Merged in alpha1:

#491: Michael Abshoff: gcc 4.3: fix givaro build due to ::memcpy
      failure
#492: Craig Citro, David Harvey: gcc 4.3: fix ntl_wrap.cc in   
      sage_c_lib [this was some time ago]
#1260: Michael Abshoff, Bill Hart: update to FLINT 1.0 and clean 
       up spkg-install
#1403: John Cremona: Analog fixes for termination issues for 
       the other mwrank binaries
#1406: Mike Hansen, William Stein: bug in coercion of multivariate
       polynomials 
#1410: Michael Abshoff: fix leftovers from 1256, make mwrank 
       binaries link dynamically, fix cython doctest issue

Merged in alpha0:

#1002: Bill Page: Update clisp to the 2.43 release [later reverted]
#1256: Michael Abshoff: mwrank*.spkg now redundant, included in
       cremona*.spkg
#1337: Carl Witty: technically incorrect code in integer_mod.pyx
#1403: John Cremona: mwrank has termination issues
#1405: Michael Abshoff, Carl Witty: gcc 4.3-snapshot: cremona 
       compile fixes. 

Reviewers: Carl Witty, William Stein, Mike Hansen, Robert Miller,
           Craig Citro, Michael Abshoff; apologies to anybody I
           forgot.

Feeback: Jaap Spies, apologies to anybody I forgot.

SAGE 2.8.15:

Hello folks,

Sage 2.8.15 has been released. It is available at

           http://sagemath.org/download.html

The following people contributed this release:

 - Craig Citro
 - Dan Drake
 - David Harvey
 - Michael Abshoff
 - Martin Albreecht
 - Jen Balakrishnan
 - Robert Bradshaw
 - Jason Grout
 - Mike Hansen
 - Leif Hille
 - Josh Kantor
 - Robert Miller
 - Joel Mohler
 - David Roe
 - Jaap Spies
 - William Stein
 - Brian "trixb4kidz"
 - Carl Witty
 - Paul Zimmermann

Cheers,

Michael Abshoff (release chair), William Stein

* Major Features, New Spkgs and Bugfixes

Singular was updated to the latest 3-0-4 release. But neither PolyBoRi
nor ATLAS made it into the final release. But the vast majority of the
prep work needed to make ATLAS a standard spkg was finally done in
this release cycle. PolyBoRi will probably become an optional spkg
first until all the details have been worked out.

We closed a total of 62 tickets, for details see

http://www.sagetrac.org/sage_trac/query?status=closed&milestone=sage-2.8.15

for details.

Closed Tickets:

rc1 - merged:

#1074: Martin Albrecht: Singular segfault with monitor("","io"); -
       fixed upstream by Hans Scher L-series
#1309: Robert Miller: graphs: generate trees
#1356: Carl Witty: fix bug when taking abs() of exactly known QQbar
#1357: Carl Witty: the polynomial .roots() method should work with
       ring=QQbar
#1368: William Stein: algorithm for computing quotient was sometimes
       wrong
#1372: Michael Abshoff: dokchitser.py doctest failure (numerical
       noise)
#1973: William Stein, Carl Witty: improve doctests of
       quotient_module.py
#1374: Carl Witty, William Stein: segfault in coercion with matrices
       and ints
#1375: William Stein: tutorial texing typo issue
#1376: Carl Witty, Michael Abshoff: fix numerical doctest failures in
       2.8.15.rc0

alpha2 - Merged:

#787: William Stein: quotient spaces of vector spaces
#799: Leif Hille, William Stein: fix tachyon bug
#962: Mike Hansen: automatic precision extension for long decimal
      literals does very strange things
#1128: David Roe, Robert Bradshaw: Coercion of complex numbers
#1160: William Stein: *major* bug in using the sage notebook as a
       maxima notebook
#1179: Robert Miller: change all #!/bin/sh to #!/bin/bash in
       $SAGE_LOCAL/bin (Solaris related)
#1184: Michael Abshoff: OSX 10.4: moving sage breaks recompile -> NTL
       related
#1201: William Stein: add gramm-schmidt to sage
#1208: Jaap Spies: Faster _choose in matrix2.py
#1211: David Harvey: NTL crash in polynomial remainder over ZZ
#1222: Josh Kantor: cvxopt import trouble on PPC OSX 10.4
#1269: Carl Witty: make sage -t --omega work
#1275: Carl Witty: implementation of QQbar
#1290: Dan Drake, William Stein: add computation of Rencontres numbers
#1292: Carl Witty: fix bug in polynomial root finding mod n
#1298: Josh Kantor: build lapack on OSX for the ATLAS build
#1327: Josh Kantor: Solaris: scipy import error - fortran compiler
       related
#1342: William Stein: very serious bug in number field residue_field
#1349: to avoid massive confusion, make the default notebook location
       $HOME/.sage/notebook
#1353: Robert Miller: fix easy bug in graph_database.py
#1354: Michael Abshoff: Solaris modp 64 bit fix
#1355: Michael Abshoff: numerical noise doctest failures in
      rings/polynomial/[complex_roots.py|polynomial_element.pyx]
#1361: Robert Miller: reimplement graph generation
#1364: William Stein: sage/modules/quotient_module.py doctest failure

alpha1 - Merged:

#644: Mike Hansen: fix "(sin + cos)(1) does not work"
#1148: David Harvey, Robert Bradshaw: valuation doesn't work for
       rational numbers
#1214: Mike Hansen: error in polynomial ideal membership testing
#1249: Robert Miller: fixes bug in graph plotting with partitions
#1265: Paul Zimmermann: documentation typos
#1279: Martin Abrecht: LLL on "tall" matrices immediately crashes sage
#1280: Mike Hansen: make Permutation(range(10)).random() fast instead
       of dog slow.
#1333: William Stein: fix a major inefficiency in floating point
       square root computation in Sage
#1334: David Harvey: Constant polynomial can't be converted to
       rational
#1341: Josh Kantor: add script so that which_fortran returns g95 or
       gfortran
#1350: Mike Hansen: sage-2.8.15.alpha0 doctest error in plot.py
#1352: Mike Hansen: doctest error in 2.8.15.alpha0
       polynomial_element.pyx

alpha0 - Merged:

#645: Mike Hansen: multi-argument call for symbolic expressions
#847: Mike Hansen: rewrite the symbolic calculus package to do
      evaluation/simplification without recursion
#1107: William Stein: add minkowski bound function for number fields
#1111: Mike Hansen: Symbolic equation expand left and right
#1134: David Harvey: optimize creating elements of orders and number
       fields by coercing in lists [I left this ticket open fow now
       - see comment]
#1141: Joel Mohler: improve Number Field elements arithmetic speed
#1268: Carl Witty: new version of MPFI.spkg
#1270: Carl Witty: implement complex intervals
#1273: Carl Witty: implement complex root isolation
#1275: Carl Witty: implementation of QQbar
#1295: Jason Grout: Added code to create the butterfly graph
#1330: Michael Abshoff: Solaris: fix sympy doctest numerical noise
#1331: Michael Abshoff: Solaris: fix complex_double doctest numerical
       noise
#1335: Michael Abshoff: Linux PPC: lcalc doctest failure
#1336: Michael Abshoff: Linux PPC:
       rings/polynomial/polynomial_element.pyx doctest failure
#1345: Mike Hansen:  I is sometimes wrapped in SymbolicConstant,
       sometimes not


Reviewers: Carl Witty, William Stein, Mike Hansen, Robert Miller,
          Michael Abshoff; apologies to anybody I forgot.

Feeback: Jaap Spies, Justin Walker, apologies to anybody I forgot.

* Known Issues with 2.8.15

    - FLINT might misbuild due to missing Python

* Upcoming Releases

Sage 2.9 is planned for the end of this week. Proposed major features
are:

 - R
 - ATLAS BLAS/Lapack
 - FLINT 1.0

* Coverage

For 2.8.15:

Overall weighted coverage score:  34.8%
Total number of functions:  17743

Compared to 2.8.13 this is an increase by 0.4%.

* About Sage (http://www.sagemath.org)

Sage is developed by volunteers and combines 71 open source packages.
It is available for download from sagemath.org and its mirrors in
source or binary form. If you have any questions and/or problems
please report them to the google groups sage-devel, sage-support,
sage-forum or sage-newbie. You can also drop by in #sage-devel in
freenode.

SAGE 2.8.14:

At least the following people contributed this release:

 - Michael Abshoff
 - Martin Albrecht
 - John Cremona
 - Alexander Dreyer
 - Bill Hart
 - David Joyner
 - Josh Kantor
 - William Stein
 - Carl Witty

Feedback and testing by Andrzej Giniewicz and Simon King, Jaap Spies,
Gregory Vanuxem and Justin Walker. Apologies to anybody I forgot.

Cheers,

Michael Abshoff (release chair), William Stein

* Major Features, New Spkgs and Bugfixes

Besides fixing the build process on OSX 10.5.1 (10.5 did work before)
John Cremona also updated g0n to compile with gcc 4.2.x. This did slip
through testing, which caused us to release a build so shortly after 2.8.13.

#998:  segmentation fault doctesting crypto/mq/sr.py [Carl Witty]
#1244: flint-0.9-r1075.p0.spkg [Bill Hart, Michael Abshoff] -
       fix corner cases on Core Duo
#1246: mpfi-1.3.4-rc3.p10.spkg [Alexander Dreyer] - mpfi-1.3.4-rc3.p9
       fails to build on x86_64 SuSE 10.1
#1247: cremona-20071124.spkg [John Cremona, William Stein] - gcc 4.2.x
       compile fixes, Solaris build fix
#1250: multivariate polynomial factorization -- control-c to cancel
       out doesn't work [William Stein]
#1251: tutorial out of date [David Joyner]
#1252: cddlib-094b.p0.spkg [Michael Abshoff] - force cddlib to link
       against Sage's gmp
#1253: gmp-4.2.1.p12.spkg, python-2.5.1.p9.spkg, clisp-2.41.p11.spkg
       [Michael Abshoff] - OSX 10.5.x build fixes
#1254: revision to combinat.py [David Joyner, William Stein] - Hadamard
       matrices of certain types via guava, use combinat.py for
       permutations instead of GAP wrapper
#1257: multi_polynomial_libsingular.pyx "random" segfault [Carl Witty]
#1262: "make check" needs to depend on all [William Stein]

We closed a total of 10 tickets, see

 http://www.sagetrac.org/sage_trac/query?status=closed&milestone=sage-2.8.14

for details.

* Known Issues with 2.8.14

   - cvxopt still fails to import certain functionality on OSX PPC (ticket #1222)

* Upcoming Releases

2.8.15 is planned before Sage Bug Day 6 (which is on Saturday,
December 1st, 2007). Major spkg candidates for 2.8.15 are

 - Singular 3-0-4
 - PolyBoRi
 - ATLAS BLAS/Lapack

* Coverage

No changes from 2.8.13.

* About Sage (http://www.sagemath.org)

Sage is developed by volunteers and combines 71 open source packages.
It is available for download from sagemath.org and its mirrors in
source or binary form. If you have any questions and/or problems
please report them to the google groups sage-devel, sage-support, sage-
forum or sage-newbie. You can also drop by in #sage-devel in freenode.


SAGE-2.8.13:

Hello folks,

Sage 2.8.13 has been released. Sources are and binaries should soon be
available at

              http://sagemath.org/download.html

This is the first release after the excellent Sage Days 6 in Bristol.
We are a couple days late, mostly due to a rocky initial alpha0 that
took some time to sort out and also the new policy that all patches
have to be reviewed before they can get merged.

The usual suspects contributed major pieces to this release:

 * Bill Hart
 * John Cremona
 * Josh Kantor
 * Martin Albrecht
 * Michael Abshoff
 * Mike Hansen
 * Ondrej Certik
 * Ralf-Philip Weinmann
 * Robert Bradshaw
 * William Stein
 * Willem Jan Palenstijn

Sorry if I forgot anybody, it has been quite a turbulent release
cycle. Thanks to all the reviewers, all the testers, especially
Jaap Spies, and please send me patches for the doctest failures.

Cheers,

Michael Abshoff (release chair), William Stein

* Major Features, New Spkgs and Bugfixes

Major new features are John Cremona's g0n, updates to flint, scipy &
numpy, cvxopt and sympy as well as major bug fixes to libfplll and
memory leak fixes in linbox. This is also the first release that
compiles on OSX 10.5 "out of the box", i.e. without the need to have
gfortran installed.

Updates spkgs in detail:

#563: linbox-20070915.p2.spkg (Michael Abshoff)
#1029: flint-0.9-r1072.spkg (Robert Bradshaw, Michael Abshoff)
#1188: libfplll-2.1.3-20071117.spkg (Martin Albrecht, Michael Abshoff,
      Willem Jan Palenstijn, also #1126)
#1177: mpfr-2.3.0.p0.spkg (Michael Abshoff)
#1189: sympy-0.5.7.spkg (Ondrej Certik)
#1197: cremona-20071116.p0.spkg (John Cremona, William Stein,
      Ralf-Philip Weinmann)
#1198: scipy-20071020-0.6.spkg (Josh Kantor)
#1198: numpy-20071020-1.0.3.1.spkg (Josh Kantor)
#1199: cvxopt-0.9.p1.spkg (Josh Kantor, Michael Abshoff, also #1121, #1161)

We closed a total of 49 tickets, see

 http://www.sagetrac.org/sage_trac/query?status=closed&milestone=sage-2.8.13

for details.

* Known Issues with 2.8.13

 - cvxopt fails to import on OSX PPC (ticket #1222)
 - g0n, i.e. cremona.spkg fails to compile on Linux/Itanium with
  older gcc and also Solaris.

* Upcoming Releases

2.8.14 is planned for next week, depending on how close the release
will be to Sage Bug Day 6 on December 2nd, 2007 we might do another
2.8.15 release the day before. Major spkg candidates for 2.8.14 are

 - Singular 3-0-4
 - PolyBoRi
 - ATLAS BLAS/Lapack

It looks unlikely that we will achieve the major goals for 2.9, namely
Solaris 32 bit support and OSX 10.5 64 bit support, in the next two
weeks, so we might do a couple more 2.8.x releases.

* Coverage

2.8.13:

 Overall weighted coverage score:  34.4%
 Total number of functions:  17472

Compared to 2.8.12:

 Overall weighted coverage score:  34.3%
 Total number of functions:  17418

* About Sage (http://www.sagemath.org)

Sage is developed by volunteers and combines 71 open source packages.
It is available for free download from sagemath.org and its mirrors in
source or binary form. If you have any questions and/or problems
please report them to the google groups sage-devel, sage-support, sage-
forum or sage-newbie. You can also drop by in #sage-devel in freenode.


SAGE-2.8.12:

The release managers were Michael Abshoff and William Stein.
  
Many thanks to all the contributors to sage-2.8.12, which mainly grew
out of bugfixes during Bug Day 5.  The main contributors to this release
include:

   * Mike Hansen
   * Nick Alexander
   * Robert Bradshaw 
   * Craig Citro
   * Robert Miller
   * Bobby Moretti
   * Yi Qiang
   * William Stein
   * Justin Walker
   * Carl Witty

Apologies to anybody I did not list who contributed. 

Important Note: The longstanding issue where upgrading can delete your work in
SAGE_ROOT/data/extcode, SAGE_ROOT/doc/, and SAGE_ROOT/local/bin/ is now
resolved -- things are now merged.  

Component: algebraic geometry (2 matches)
765     Ctrl-C unresponsive in rational_points  was     defect  major           fixed
766     Duplicate method in structure/formal_sum.py:FormalSums_generic  was     defect  major           fixed

Component: basic arithmetic (6 matches)
Ticket  Summary         Owner   Type    Priority        Version         Resolution
61      hanke -- disturbing matrix constructor issue involving rows versus columns      mhansen enhancement     minor           fixed
790     rational reconstruction failing for p-adics     somebody        defect  major           fixed
995     Generalize polynomial .roots() method by adding optional ring= parameter for result ring        cwitty  defect  major           fixed
1096    real_roots may give wrong answers on non-squarefree polynomials somebody        defect  major           fixed
1100    polynomial roots() method can return rational roots for polynomials over ZZ     cwitty  defect  major           fixed
1112    Integer.__pow__ somebody        enhancement     minor           fixed

Component: calculus (2 matches)
Ticket  Summary         Owner   Type    Priority        Version         Resolution
554     the calculus roots command is totally stupid.   mhansen defect  major           fixed
1042    reset() doesn't restore anything in all_cmdline or all_notebook was     defect  major           fixed

Component: combinatorics (3 matches)
Ticket  Summary         Owner   Type    Priority        Version         Resolution
1071    IntegerVectors_nk       mhansen enhancement     major           fixed
1088    graphs: minimum spanning tree function  mhansen enhancement     major           fixed
1117    fix #1088       rlm     defect  major           fixed

Component: doctest (2 matches)
Ticket  Summary         Owner   Type    Priority        Version         Resolution
1095    silly annoyance in sage -coverage       craigcitro      defect  trivial         fixed
1103    2.8.12.alpha1: doctest failure in schemes/elliptic_curves/lseries_ell.py        was     defect  major           fixed

Component: documentation (4 matches)
Ticket  Summary         Owner   Type    Priority        Version         Resolution
989     Stripping $ from documentation  tba     defect  major           fixed
1087    add combinatorics documentation to the reference manual mhansen defect  major           fixed
1113    Delete a file to fix an example involving the sage latex mode   tba     defect  minor           duplicate
1114    Delete a file to fix an example involving the sage latex mode   tba     defect  minor           fixed

Component: interfaces (2 matches)
Ticket  Summary         Owner   Type    Priority        Version         Resolution
1080    inconsistent doctest failure in sage/misc/sage_eval.py  cwitty  defect  major           fixed
1109    gp interface raises stack overflow exception if gp stack exceeds available memory       was     defect  major           fixed

Component: memleak (2 matches)
Ticket  Summary         Owner   Type    Priority        Version         Resolution
894     small ntl memory leaks in 2.8.7.alpha0  craigcitro      defect  major           fixed
1105    static memory leak in libSingular interface     mabshoff        defect  minor           fixed

Component: notebook (3 matches)
Ticket  Summary         Owner   Type    Priority        Version         Resolution
435     sage notebooks have hardcoded absolute paths    boothby defect  critical                fixed
683     bug in "latex?" in the notebook boothby defect  major           fixed
1110    improve notebook help message   boothby defect  major           fixed

Component: number theory (6 matches)
Ticket  Summary         Owner   Type    Priority        Version         Resolution
836     L-series dokchitser -- infinite recursion       was     defect  major           fixed
1040    bug in new ring extension constructor   ncalexan        defect  critical                fixed
1041    latex representation of fractional ideals in a number field is totally stupid   was     defect  major           fixed
1043    constructing number field with check=False doesn't behave as it should  was     defect  major           duplicate
1055    Don't factor discriminant for quadratic number fields   robertwb        defect  major           fixed
1057    Order elements do not have Z as a (proper) basering     mabshoff        defect  critical                fixed

Component: packages (11 matches)
Ticket  Summary         Owner   Type    Priority        Version         Resolution
283     Improve the SAGE vmware image   was     enhancement     major           invalid
407     improve how gap workspace caching works was     defect  major           duplicate
527     gap -- gap_reset_workspace()    was     task    critical                fixed
546     hg_extcode should merge repository on upgrade/install instead of overwriting    was     defect  critical                fixed
547     hg_doc should merge repository on upgrade/install instead of overwriting        was     defect  critical                fixed
548     hg_scripts should merge repository on upgrade/install instead of overwriting    was     defect  critical                fixed
575     make building SAGE on cygwin stop fast and clean        mabshoff        defect  major           fixed
1067    moin moin wiki in sage -- updates needed        was     defect  major           fixed
1079    DSage improper get_worker_count yi      defect  major           fixed
1081    update the deps file    was     defect  major           fixed
1098    make rpy work with SAGE data types      mhansen enhancement     minor           fixed

Component: user interface (1 match)
Ticket  Summary         Owner   Type    Priority        Version         Resolution
1084    invalid use of ring notation gives bizarre post-preparser syntax error  ncalexan        defect  minor           fixed



Sage 2.8.11:

Release team: Michael Abshoff (chair), William Stein, Carl Witty

While there were many bug fixes, performance improvements and features added 
the main goal of this release was to get Sage building out of the box in 32 
bit mode on OSX 10.5. We didn't make it 100% to the finish line, but more 
about that below. The main participants in the port were William Stein, 
Ralf-Philipp Weinmann and Michael Abshoff. If you plan to participate in 
Sage Bug Day 5 you should build this release since it will be the base we 
build upon.

This release contains patches and updated spkgs from (in ascending order 
of ticket number):

* Jaap Spies
* Carl Witty
* Tom Boothby
* William Stein
* Martin Albrecht
* Josh Kantor
* Ondrej Certik
* Michael Abshoff
* Joel Mohler
* Mike Hansen
* Jennifer S. Balakrishnan
* Jason Grout
* Robert Bradshaw
* Ralf-Philipp Weinmann

The following 33 tickets have been closed during the 2.8.11 release cycle:

#217: optimize matrix permanents (Jaap Spies)
#389: bug in mpfi C library (Carl Witty)
#431: dsage jobs get lost by server (Yi Qiang, fixed by an earlier patch)
#750: permutation group element (dict method, acting on lists) (Tom Boothby)
#762: Elliptic curve L-series bug (William Stein)
#830: SAGE does not install 'gphelp' for extended PARI/GP help (Carl Witty)
#845: can't pass boolean as parameter to Magma (Martin Albrecht)
#948: very slow factorization over a numberfield in a 2-variable ring 
      (Martin Albrecht, Hannes Schönemann)
#959: errors building sage because singular gets confused by system-wide boost 
      (Martin Albrecht)
#969: cvxopt miscompiled on OSX ppc (Josh Kantor, fixes by Michael Abshoff)
#971: update Sympy.spkg to 0.5.6, add some minimal doctests (Carl Witty, 
      Ondrej Certik)
#973: Unhandled SIGSEGV: A segmentation fault occured running dance(10
       (Michael Abshoff, Carl Witty)
#993: Pari's gp interpreter has built-in library search path (Carl Witty)
#1011: MagmaElement.__nonzero__ (Martin Albrecht)
#1026: memleak in linbox's gmp++_int_io.C (Michael Abshoff)
#1030: MPolynomial_libsingular mutates with call to factor (Joel Mohler)
#1032: Latex'ing variable names is more robust and consistent (Joel Mohler)
#1033: updated optional spkg: biopython 1.44 (Mike Hansen, fixes by William 
       Stein, Michael Abshoff)
#1034: clean up 'revlex' term ordering mess (Martin Albrecht)
#1037: arithmetic with Schubert polynomials  (Mike Hansen)
#1038: bad interaction between numpy and in-place operations (Robert Bradshaw)
#1039: Dokchitser L-series of number field (Jennifer S. Balakrishnan, referred 
       by William Stein)
#1044: segfault apply morphism to field element (Carl Witty)
#1045: add eulerian testing and circuit-finding (Jason Grout, referred by 
       Robert Miller)
#1049: graphs: transitive reduction function (Jason Grout, referred by 
       Robert Miller)
#1053: updated Cython to the 0.9.6.8b release (Robert Bradshaw)
#1056: Fix Givaro 3.2.6 build problem on MacOS X 10.5 (Ralf-Philipp Weinmann, 
       integrated by Michael Abshoff)
#1059: fix lcalc installation on OSX 10.5 (William Stein, integrated by 
       Michael Abshoff)
#1051: pari/gp extended help stops working when sage tree is moved (Carl Witty)
#1057: Order elements do not have Z as a (proper) basering (Robert Bradshaw)
#1060: fix flintqs compile on OSX 10.5 (William Stein, integrated by Michael 
       Abshoff)
#1061: updated python spkg on 10.5 (William Stein)
#1063: "sage -sh" should run $SHELL with Sage environment variables set 
       (Carl Witty)


Build instruction for OSX 10.5

Install gfortran (e.g., binaries from http://sagemath.org/packages/binary/gfortran/
or http://hpc.sourceforge.net/ and export SAGE_FORTRAN=`which gfortran`. 
Then the build will work. 
There is one more doctest to fix and I am certain that this will be done
quickly. If you do not install gfortran Sage will use the prebuilt 
g95 which will fail to compile scipy on 10.5. Please report any issues you 
encounter.  

Apologies to anybody I might have forgotten.

Cheers,

Michael


Sage 2.8.10:

Release team: Carl Witty (chair), Michael Abshoff, William Stein

New packages:
Revised Cython from Robert Bradshaw
Mercurial updated to 0.9.5 by Carl Witty

Tickets closed:
#58    added subsets() method for Set (Jason Grout)
#416   faster GF(2^n) arithmetic for n >= 16 (Martin Albrecht)
#657   improved is_zero() on symbolics (Mike Hansen)
#724   improved error-checking on graph6 parsing (Robert Miller)
#749   enum() functionality duplicated in relabel() (Robert Miller)
#875   fast Sage -> Pari int conversion (Craig Citro)
#899   minor update for inst.tex (David Joyner)
#901   minor addition to prog.tex (David Joyner)
#931   optimize permanent code for matrices over ZZ (Jaap Spies)
#935   fix missing files in sage-*.spkg (Carl Witty)
#938   graph_database.py problems fixed (Robert Miller)
#955   subprocess synchronization problems (Carl Witty)
#958   bug in "make install" (Carl Witty)
#960   floatint-point printing improved (Mike Hansen)
#988   restore bg= option for edit() (Nils Bruin)
#994   fixed strange __int__ method on ntl_GF2X (Martin Albrecht)
#996   Isomorph-free exhaustive graph generation (Robert Miller)
#1003  overflow on GF(2^n) powering (Martin Albrecht)
#1007  fixed cyclotomic_polynomial() (Robert Bradshaw)
#1008  reverted "touch" in setup.py (William Stein)
#1009  fixed slow caching of NTL context objects (William Stein)
#1012  doctest failures in alpha0 (Carl Witty)
#1015  free monoid and free algebra fixes and features (Joel Mohler)
#1016  added max_level argument to flatten() (Jason Grout)
#1017  added solution_dict= argument to solve() (Jason Grout)
#1018  changed prod() to use balanced tree (Robert Bradshaw)
#1020  fixed several Cython warnings from duplicate declarations (Carl Witty)
#1021  bug-fix for real_roots returning extra non-roots (Carl Witty)
#1022  combinatorics update/fixes/additions (Mike Hansen)
#1023  added support for valgrind's omega to sage-sage (Michael Abshoff)
#1024  memleak fix in sparse rational vectors (Michael Abshoff)
#1025  fixed conversion of symmetric functions into a dual basis (Mike Hansen)

Issues fixed without a ticket:
new sage3d.js from Robert Bradshaw makes interactive 3D graphics work again


SAGE 2.8.9:

Release team: Martin Albrecht (chair), William Stein, Carl Witty, Michael Abshoff

Tickets Closed/Issues Resolved/Kittens Rescued:
===================================

#758  Use NTL directly in Z/nZ polynomials  robertwb
#837  RealNumber should have abs method  cwitty
#904  graphs: clique-testing  jason
#929  wrap fpLLL-2.0  malb
#967  inplace operators for GF(p),GF(p^n) ...  malb
#282  add matrix() class to FiniteFields ... malb
#968  graph_isom: memory management, legibility  rlm
#768  Open a method source in the editor of your choice nbruin
#895  .inverse() method for matrices  mhansen
#898  ntl.GF2  malb
#916  remove structure.sequence._combinations  malb
#963  singular attribut getting/setting  malb
#966  ntl.GF2X  malb
#970  ntl.GF2E  malb
#974  small memleak in nullspace.c in IML  mabshoff
#310  Debian testing version of mercurial ... cwitty
#920  integrate doesn't handle divergent case correctly mhansen
#921  Exception error for divergent integral looks bad mhansen
#976  fpLLL fast early reduction segfaults malb/stehle
#977  Schubert polynomials send 1 ... mhansen
#978  bug in Sequence __str__ method was
#982  abs(x) returns incorrect LaTex  mhansen
      and some more were invalidated.


SAGE-2.8.8.1

This is a very minor update to sage-2.8.8, which just changes the file gap.py.


SAGE-2.8.8

See 

   http://trac.sagemath.org/sage_trac/milestone/sage-2.8.8

New GAP version; lots of bug fixes.


SAGE-2.8.7.2

This is a minor release needed for Sage Bug Days 4.


SAGE-2.8.7

See http://trac.sagemath.org/sage_trac/query?status=closed&milestone=sage-2.8.7 for more details about
the list of patches included in this release. 
 
#294 slowness in mpfr_root      somebody        enhancement     minor   basic arithmetic        
#467 asymptotically slow pari integer conversions               craigcitro    enhancement       minor   basic arithmetic 
#468 quaddouble wrapper sets fpu precision to 53 bits for entire sage session           bober   defect           major basic arithmetic 
#470 libpari doesn't deallocate its stack [usually 8MB or more]   was defect major                      packages                 
#486 number_of_partitions() could be faster. bober        enhancement                           minor                    combinatorics 
#533 matrix_rational_sparse_allocate_mpq_vector leak (from modular/ssmod/ssmod.py)                      mabshoff                 defect        major memleak 
#534 matrix_modn_sparse_Matrix_modn_sparse leak (from modular/ssmod/ssmod.py)                           mabshoff                 defect        major memleak 
#559 memleak in multi_modular_MultiModularBasis_base exposed by ModularSymbols(n,sign=1).decomposition()        mabshoff                 defect        major memleak 
#596 sage wiki() doesn't close with ctl-C           was     defect                                      minor                    website/wiki  
#616 sage -coverage improvements                                                craigcitro               enhancement   minor user interface 
#635 p-adic height gives incorrect precision                                            dmharvey                 defect        major algebraic geometry 
#643 notebook -- fix space issues with the top bar.                                             was                      defect        major notebook  
#662 Start Browser with clean environment  malb                                         defect                   major         user interface  
#826 Coercing rational function elements (i.e. fraction field) to symbolic ring                  was           defect          major calculus 
#828 edit() always puts the editor into the background was      defect  minor user interface  
#831 hg_sage.export('tip') was enhancement             minor    packages   
#832 MPolynomialIdeal.vector_space_dimension       malb enhancement     minor   commutative algebra 
#833 new coercion model segfault (??)                              robertwb             defect  blocker     basic arithmetic 
#835 cannot coerce real numbers to Integer                                 somebody             defect  critical    basic arithmetic 
#840 new real root isolation algorithm                             was                  enhancement         major numerical  
#841 hash() on algebraic reals is not stable                       tbd                  defect              minor basic arithmetic 
#842 SAGE's Singular build fails to factor simple polynomials      malb                 defect              critical    commutative algebra 
#843 fast quadratic field elements      somebody      enhancement          major                basic arithmetic    
#849 Cython 0.9.6.7           was                  enhancement          major packages      
#850 graphs: create graph by specifying vertices and a function giving adjacencies          was enhancement major combinatorics 
#851 graphs: line_graph function               was      enhancement    major  combinatorics         
#852 Singular's Factorisation crashes under OSX        mabshoff defect         critical                     packages 
#854 memory leak: MultiModularBasis_base_mpz_crt_vec_tail       mabshoff                            defect   major memleak 
#856 strange behaviour when converting a numpy matrix to a sage one                         mhansen  defect        major numerical 
#858 add support for numpy arrays with integer entries  mhansen                             enhancement            major numerical 
#859 Cannot coerce numpy integral types to ZZ  cwitty   defect                              major                  basic arithmetic 
#860 dsage -- update to fix a bunch of "rough edges" was   defect major distribution                        
#861 magma.[get|set]_verbose  was       enhancement      minor interfaces       
#862 memory leak: Matrix_modn_sparse    mabshoff                defect  major   memleak 
#865 several small memory leak in multi_modular         mabshoff        defect  major   memleak 
#866 big NTL patch craigcitro  defect                   major           interfaces      
#867 support for rook monoid and planar rook monoid (as well as their diagram/partition algebras) and a few other misc. fixes mhansen enhancement minor combinatorics 
#868 graphs: upgrade networkx to 0.35.1 was      task   major    combinatorics              
#869 graphs: bipartite graph functions   was                        enhancement major   combinatorics 
#871 graphs: circulant graph creating function                      was         enhancement           major combinatorics 
#873 sage -clone is rebuilding everything !         was      defect                         critical    user interface        
#878 graphs/graph.py: Correct a doctest failing on some systems due to different output ordering.       was  defect           blocker combinatorics 
#880 2.8.7-alpha0: many segfaults when running doctests on 32-bit x86 Linux          failure            defect                blocker doctest       
#882 2.8.7-alpha0: doctest failures in sets/set.py and matrix/matrix_integer_dense.pyx (due to RR->ZZ coercion patch)     somebody                  defect blocker basic arithmetic 
#883 2.8.7-alpha0:doctest failure: sloane_functions.py assumes that ZZ(3.0) fails                  failure defect blocker  doctest    
#884 2.8.7-alpha0: doctest failure in rings/residue_field.pyx  was                         defect  blocker         doctest    
#885 2.8.7-alpha0: doctest failure in rings/morphism.pyx (loads/dumps)             failure defect          blocker    doctest 
#886 2.8.7-alpha0: doctest failure in rings/integer_mod.pyx (expecting wrong type)         failure defect          blocker    doctest 
#887 2.8.7-alpha0: doctest failure in rings/polynomial/real_roots.pyx  failure     defect  blocker         doctest    
#889 2.8.7-alpha0: doctest failure in schemes/elliptic_curves/lseries_ell.py (tiny differences in answer)          failure    defect blocker doctest 
#890 2.8.7-alpha0: doctest failure in schemes/elliptic_curves/ec_database.py (database lookup failures)    failure         defect     blocker        doctest 
#891 symmetrica needs to have its deallocation routine called upon exit   mhansen                  defect          major      memleak        
#892 sage -t doesn't test .pxi files       failure defect minor       doctest              
#893 2.8.7-alpha0: doctest failure in const.tex    tba    defect      blocker              documentation 
#897 number_of_partitions -- now broken on OS X PPC                was    defect      critical             combinatorics 


SAGE - 2.8.6

 * Change Sage library to "GPL version >= 2."
 * Robert Bradshaw -- upgrade Cython
 * Martin Albrecht -- upgrade singular
 * Jason Grout (refereed by Robert Miller) -- lots of updates to the graph theory package
 * Mike Hansen -- updates to combinatorics; improved how multi-variate poly rings print.
 * William Stein -- many bug fixes
 * Martin Albrecht -- many small improvements to commutative algebra
 * Joel Mohler -- optimizations
 * Soroosh Yazdani -- improvements to smith normal form
 * Gonzalo Tornaria and William Stein -- made pari c library interface automatically 
                                         increase memory as needed
 * Craig Citro and William Stein -- improvements to scons so that branch switching works.

----------------------------------------------------------------------------------------------

#741    sage -bdist: after doing this in sage-2.8.5, the dsage unit tests don't run for the resulting binary
#763    serious bug latexing p-adic L-series
#769    Matrix_mod2_dense._echelon_strassen gives false results sometimes
#528    write new Integer_mod_dense class that wraps NTL directly
#593    MPolynomialIdeal.reduced_basis() doesn't behave as expected
#694    SAGE's multivariate gcd sucks over QQ and/or ZZ
#701    port srange to Cython for speed
#719    make pari.allocatemen() more clever
#728    sage_inspect broken
#735    issues with server timing out worksheets
#745    update the version of FLINT that is in Sage
#746    graphs: graph name is not reset using clear()
#747    flint build problem on itanium
#755    graphs: adjacency_matrix() does not call multiple_edges correctly.
#759    graphs: density returns incorrect result for directed graphs.
#764    repr(PolynomialRing(ZZ, 1, 'x')) is ambiguous
#770    Bad behaviour when Ctrl-C hit while running an expect interface
#776    kernel of linear homomorphism fails
#784    quotient spaces of vector spaces
#789    Can't create a submodule over a QQ[x]-module
#798    MPolynomial_libsingular.subs
#801    graphs: Latexify module-level documentation     
#806    matrix_integer_dense.elementary_divisors return a mutable object
#809    class_graph fixes
#810    gens_reduced for general ideals
#816    Commutative Algebra assorted functionality
#817    O(3^(-2)) is broken
#818    Convert of prod to Cython
#822    Some matrix multiplications inefficiencies
#730    graphs: fickle equality testing
#736    combinatorics updates
#761    graphs: Lots of various doc changes and additional doc tests.
#774    graphs: change "node" to "vertex"
#782    sage -testall should support ctrl-C
#786    standard smith normal form
#794    MPolynomial_libsingular.jacob() 
#796    Yet another fix for c_lib/scons stuff
#802    graphs: Streamline and document _cmp_ more
#760    graphs: a small change to subgraphs allow it to default to the original graph.
#795    tiny documentation update for MPolynomialIdeal.groebner_basis


SAGE 2.8.5.1

This is a minor bug fix release that does have a lot of new code related specifically
to algebraic number theory (especially relative number fields).

#702: Robert Bradshaw: Bug fixes for the ellipsis range notation
#722: William Stein: Fix: GF(100) gives weird error message
#734: Williamm Stein, Mike Hansen: Fix combinatorics problems on 
      fedora core 7 with sage-2.8.5
#738: William Stein: easy-to-fix bug in matrix2.pyx
#742: William Stein: Made notebook worksheet timeout optional and 
      off by default
#751: William Stein: Lots of new code and changes related to 
      algebraic number theory

Also, the iml package has been temporarily reverted to a previous 
version do to build problems on some machine.

SAGE 2.8.5:

This is a *MAJOR* new Sage release, which includes many bugfixes (some
quite important to usability), and substantial new features and
functionality.  Sage 2.8.5 includes Mike Hansen's massive new
combinatorics packages along with the Symmetrica C library, much new
multivariate polynomial code by Martin Albrecht along with bug fixes
and sparse mod-p linear algebra via Linobx, new algebraic number
fields code by William Stein and Robert Bradshaw, a major refactoring
of NTL by Joel Mohler, Craig Citro, David Harvey and Robert Bradshaw,
Bill Hart and David Harvey's the long-awaited FLINT library for
super-fast polynomial arithmetic is now included standard in SAGE
(though currently it is not used by anything by default, and can only
multiply polynomials), a very nice new global proof option by David
Roe, Robert Bradshaw's complete and fully optimized implementation of
sequence notation [1..5], (2..7), [1,3,5,..19], and updates to MPFR,
IML, and Linbox thanks to Michael Abshoff and Martin Albrecht.  PPC32
Linux should now also be officially supported (thanks to Michael
Abshoff).  John Cremona also updated mwrank. Finally, Gonzalo Tornaria
and William Stein fixed a major bug in the Sage signal handling
system, so control-c, should now be much more robust.

We closed 43 tickets, which are listed here:

  http://trac.sagemath.org/sage_trac/query?status=closed&milestone=sage-2.8.5&order=id

or, by category, here:

  http://trac.sagemath.org/sage_trac/milestone/sage-2.8.5

Thanks to the many people who contributed to this release, and anybody
I forgot to mention above.  There were dozens of people not listed
above who made important contributions.


Sage 2.8.4.2.2

This release closes the following trac tickets:

#262: Alex Ghitza: extend point counting on elliptic curves
      to non-prime finite fields -- the GF(p) case.
#395: Marshall Hampton: flatten command for nested lists
#481: William Stein: sagemath.org Optional Packages out of date
#519: Martin Albrecht and Michael Abshoff: memory leak: many states passed to
      gmp_randinit_mt are leaked
#556: ??: ntl re-wrapping in sage-2.8.3 broke sage on itanium linux
#622: William Stein: SAGE's factor function is not probably
      correct (actuall it was..., but now it's much better)
#625: William Stein: check for system gfortran, g95 or g77
      when no binary is available
#628: P. Denapo (refereed by Joel Mohler): Make binomial(x,m) work for
      symbolic expressions when x-m is an integer
#631: William Stein and John Cremona: update mwrank package
#640: Michael Abshoff (refereed by W Stein, reported by Kate Minola): get
      rid of the circular link that is created when installing the python
#646: Robert Bradshaw (refereed by W Stein, reported by Kate Minola) plot3d
      error on itanium

Sage 2.8.4.2.1

A minor version needed for Sage Bug Day 3.

Sage 2.8.4.1

A very minor bugfix release:

* Fix a c_lib build issue on opteron linux.
* Add sage -gdb-ipython for running ipython under gdb
* Fix a PARI build issue related to ppc32-bit linux.

Sage 2.8.4

This release is another one that concentrates on fixing bugs and 
increasing the doctests coverage. Many people contributed a
nd a great number of tickets were closed.

    * Craig Citro -- fixes to build process (involving c_lib)
    * Craig Citro -- modular forms bugfix (for projection map); 
      added some number fields functionality, many new doctests
    * Pablo De Napoli (refereed by Martin Albrecht) -- added 
      minpoly for finite field elements.
    * Robert Bradshaw (and William Stein) -- created a separate 
      java3d spkg
    * Mike Hansen -- lots of Bug fixes all over the place
    * Michael Abshoff -- bug fixes, improved valgrind support, 
      Solaris port fixes
    * William Stein -- bug fixes and lots more doctests, added 
      coverage flag for doctests, improvements to the build 
      process (SCons not rebuilding issue)
    * William Stein, Michael Abshoff, Martin Albrecht, Robert 
       Bradshaw, Burcin Erocal, Joel B. Mohler: memleak fixes
    * Timothy Clemans -- bug fix for the notebook
    * Tom Boothby -- bug fixes for the notebook, various other 
      fixes
    * David Harvey: bug fixes, integration of vastly improved 
      gcd code from gmplib.org/devel, AMD64 specific assembly code:

      sage: a = ZZ.random_element(2^10000000);
      sage: b = ZZ.random_element(2^10000000);
      sage: time t = XGCD(a, b)
      CPU times: user 16.03 s, sys: 0.39 s, total: 16.42 s

With 2.8.3 and the old gmp package this took about 900 seconds


Sage 2.8.3.6

This is a minor bugfix over the previous release.

Sage 2.8.3.5

This is a minor bugfix over the previous release.

Sage 2.8.3.4

This is a bug fix release.  Some of the contributors and contributions are listed below.

High level changelog:
  * Craig Citro -- fixes to build process (involving c_lib)
  * Craig Citro -- modular forms bugfix (for projection map); added some number fields functionality
  * Pablo De Napoli (refereed by Martin Albrecht) -- added minpoly for finite field elements.
  * Robert Bradshaw (and William Stein) -- created a separate java3d spkg
  * Mike Hansen -- Bug fixes
  * Michael Abshoff -- bug fixes
  * William Stein -- bug fixes and lots more doctests.

Sage 2.8.3

    * Michael Abshoff: General build, debugging, etc., contributions.
    * Martin Albrecht: Much new code for working with matrices over certain polynomial rings
    * Michael A and Martin A: fixed serious memory leaks in integer linear algebra
    * Tom Boothby: Greatly improved pow and generic_power
    * Tom Boothby: Preliminary notebook support for internet explorer
    * Robert Bradshaw: Added first version of new java/notebook based 3d plotting capabilities.
    * Robert Bradshaw: Improvements to coercion code
    * Robert Bradshaw and David Joyner: New Rubik's cube solver code interface code.
    * Paul Dehaye: Interface improvements
    * Mike Hansen: Lie interface
    * David Joyner, Tom Boothby, Robert Miller: Update to guava in the GAP spkg.
    * Joel Mohler (with Craig Citro and David Harvey): Move c_lib back into the main SAGE repo (no more sage_c_lib); NTL wra
pper improvements
    * William Stein: New Modular forms code.
    * William Stein: upgraded maxima to version 5.13.0
    * William Stein: Fix some quaternion algebra bugs; Fix bug with current directory in notebook.



August 21, 2007
---------------

Release notes for Sage 2.8.2

The goal of this release was to squash as many known bugs from our
bug tracker as possible. Only a very limited number of features
have been added and to some extend the portability of Sage to
Solaris has been improved. While we haven't crossed the finish
line for Solaris yet we have gotten very close. Unfortunately
some of the fixes caused problems on other architectues, so we
will revisit those problems in the future, hopefully for 2.9

The total number of tickets closed was 47. Considering that now
there are about 217 tickets open (of which many are enhancements
and not defects) Sage's Bug Day 1 can be considered a tremendous
success. Participation was lively (in total 10 people showed up)
and the whole session went on for about 16 hours. Some of the
people  even got together in IRC the next day to sort out some of
the leftovers.

We still think that certain aspects of the way we planned and
handled the bug day can be improved upon (as always) and plan to
do Sage's Bug Day 2 on September 7th 2007 starting at 10 am
Pacific time.

The results from Sage's Bug Day 1 are as follows:

algebraic geometry  4/4
basic arithmetic   12/12
interfaces          5/6
linear algebra      3/3
modular forms       2/2
notebook            5/7
number theory       2/2
packages            7/11
user interface      7/7

x/y denotes that x out of y bugs in that category were fixed.

For the details check out

 http://www.sagemath.org:9002/sage_trac/milestone/sage-2.8.2

and

 http://www.sagemath.org:9001/bug1/Results


August 08, 2007
---------------

Release notes for Sage 2.8.1:
-----
These are the release notes for sage-2.8.1, though there never was an
offical release.  The reason it was never officially released was that
2.8.1 was the basis of the first Sage Bug Squashing day that is about
to be wrapped up.  

The main goal of this release was to get Sage to compile cleanly on a
wider range of platforms, and fix any build-system bugs we discovered
along the way:

 * Linux on Itanium
 * Linux on PPC 64
 * Solaris on Sparc and Opteron

This involved a whole lot of massaging spkg-install scripts and build
options. William Stein did the port for Linux on Itanium and PPC 64
while William Stein, Michael Abshoff, Didier Deshommes and Kate Minola
did work on the Solaris port. They were helped by Martin Albrecht to
sort out some Singular and libSingular build issues. Robert Bradshaw
coded up a patch to sort out some issues with Cython on *BSD based
systems.

While the Itanium port of Sage is now fully working and supported
neither the Linux on PPC not the Solaris on Sparc/Opteron port made it
to the finish line. While the Linux on PPC is close there are still
some issues left with Solaris, but great progress has been made there.

Detailed changes:

* w stein, m abshoff: add stdint.h to local/include/ to work around
                     missing defines in Solaris

* r bradshaw: fix coercion code to compile on *BSD, fix Cython to
             warn about _[A-Z] PyObjects.  [not applied yet.]

* w stein: Make sure that the system-wide gmp doesn't get picked up.

* w stein, d deshommes, m abshoff: linbox build fixes, lround
           workaround, build against gsl blas on solaris

* w stein, k minolta: gfortran binary on Solaris, add SAGE_FORTRAN
                     environment variable.

* w stein: make f2c use gcc instead of cc on Solaris

* w stein: pari build fixes on Solaris and Itanium

* w stein: fix problem wirh matplotlib when linking in the wrong libz
          in /usr/local/lib

* w stein: new mpfi package

* w stein, m abshoff, m. albrecht: many fixes to the singular package
                                  to make it build on Solaris

* w stein, m abshoff, d deshomees: stdint.h fix for Solaris

* w stein: update gmp package, so that the resulting gmp is nuch more
portable  (and possible resolve some other bugs -- old version was
building with certain patches preapplied).

Many of the fixes were a joint effort be several people, some fixes
were discovered twice, i.e. Didier Deshommes had made suggestions on
fixes for Sage 2.5.x on Nexenta which were unfortunately
rediscovered. We will discuss how to deal with that problem in the
report about the first Sage Bug Squashing day.

Cheers,
Michael Abshoff

Sun Aug 12 14:10:37 2007
------------------------
2.8:
       * juan m bello rivas: fix so clisp can be built in the background.
       * m albrecht, c pernet: new version of givaro that fixes some bugs. (gcc-4.2 support)
       * m abshoff, c pernet, w stein: new version of linbox that fixes some bugs. (gcc-4.2 support)
       * d kohel, g nebe, et al.: Genus computation for quadratic forms (not really made public yet 
             but it is there in quadratic_forms/genus).
       * e kirkman, r miller: graph database improvements (which are generally useful).
       * s howe, r miller: bruhat intervals
       * j mohler: programming guide improvement
       * b moretti: cayley graphs
       * w stein: upgraded sympy to version 0.5.1, whose main features included much optimization
       * w stein: implement computing half_integer_weight_modform_basis function for computing 
                 a basis for half-integral modular forms of given weight, level, and character.

Thu Aug  2 21:18:23 2007
------------------------
2.7.3: 
       * r bradshaw: bug fixes
       * j bober: vastly optimized number_of_partitions
       * c citro: bug fixes and optimization of computing eisenstein series. 
       * d kohel: bug fixes; improved free modules
       * w stein: upgraded to jsmath-3.4c
       * w stein: many misc bug fixes; speed up bell_number
       * j walker: notebook bug fixes, etc. 
     

Sat Jul 28 21:47:59 2007
------------------------
2.7.2:
       * m albrecht (refereed by r bradshaw): some tiny bug fixes
       * s behnel, w stein: cython-0.9.6 replaces sagex; this is a merge of lxml-pyrex and sagex.
       * j bobber, b hart, w stein, et al.: fast computation of number_of_partitions
       * w stein, j walker: misc little bug fixes
       * w stein: added "sage -min" option to start sage without defining global vars
       * w stein: some modular forms improvements and bug fixes

Tue Jul 24 16:41:34 2007
------------------------
2.7.1: 
       * m albrecht: misc arithmetic fixes and improvements
       * r bradshaw: matrix subdivisions
       * r bradshaw: lots of p-adic and series optimizations
       * r bradshaw: implementation of the new coercion model (massive amount of work)
       * j kantor and w stein: switch from fortran to g95 and update many build scripts
       * d kohel (ref w stein): improvements to Jacobians and point sets
       * e kirkman and r miller: graph genus module; speed and bugfix 
                                 and documentation improvements to NICE
       * j schmidt: group theory bug fixes
       * w stein & d deshommes: putting all spkg's under revision control; 
               reorganize package structure
       * w stein: upgrade to pari-2.3.2
       * w stein: upgarde to ZODB-3.7.0
       * c wuthrich: supersingular p-adic birch and swinnerton-dyer code

Thu Jul 19 21:45:41 2007
------------------------
2.7:    
        * m albrecht: a huge patch of fast multivariate poly arithmetic code, etc. 
        * r bradshaw: enhancements to sagex; merge with official pyrex.
        * d harvey: generic convolution function
        * d joyner (refereed by n alexander): large permutation group improvements patch. 
        * j kantor: excellent fortran support (e.g., %fortran in the notebook)
        * j kantor and w stein: new standard SAGE packages -- 
               blas: fortran low level linear algebra
               cvxopt: convex optimization, linear programming, sparse linear algebra
               f2c: fortran to c conversion program
               gfortran: binaries
               lapack: fortran high-level linear algebra library
               scipy: latest svn version
        * r miller, e kirkman, t boothby: substantial bug fixes and improvements to graph theory code.
        * w stein: upgrade to latest svn version of scipy (much easier to build, etc.)
        * w stein with b moretti, y qiang, a clemesha, d ramier, t clemans, and t boothby: 
                   rewrite of the SAGE notebook; use twisted; more robust security model, etc. 
        * w stein: removed Mark Watkins's EC completely from SAGE.
        * w stein: upgraded to mercurial-0.9.4
        * w stein: included sympy-0.4.2 standard with SAGE (do "import sympy")
        * g tornaria: improvements to the SAGE base coercion code and free modules
        * c wuthrich: p-adic BSD bounds

  
Sat Jun  2 22:37:01 2007
------------------------
2.6   
        * m albrecht: greatly improve handling of term orders; 
                              commutative algebra bugfixes
        * m albrecht, w stein, and j kantor: added a "backslash solve 
                              operator" like in Octave/Matlab. 
        * t boothby (ref by r bradshaw): major optimization of univariate polynomial evalution
        * r bradshaw: massively speed up point enumeration on curves over finite fields;  
                      hyperelliptic curve point counting; sqrt improvements;
                      2-descent over number fields (via Denis Simon's program)
        * c citro: greatly optimized computing q-exp of eisenstein series E_k and sigma. 
        * n dunfield: sagex section of tutorial improvements
        * d harvey: bug fix in alternating group g kobold found; 
                    speed up delta_qexp
        * d joyner (refereed by n alexander): improvements to rubik's 
                    cube and linear codes
        * d kohel: fixes for basic Jacobian curve arithmetic.
        * r miller: elliptic curve congruence graph
        * b moretti (refereed by n alexecan): fibonaci_sequence and fibonaci_xrange
        * y qiang: substantial update to dsage.
        * y qiang and w stein: add gnutls and dependencies and removed openSSL (and pyopenssl) from SAGE.
        * d simon: new version of his pari 2-descent program
        * w stein: upgrade ipython to version 0.8.1
        * w stein: removed predefines from "from sage.all import *".
        * w stein: sagex improvements; added a few page to beginning of tutorial
        * m van den bergh: fix echelon / ZZ bug that t gegenberg reported. 
        * c witty: square-free decomposition over ZZ (wrapping NTL); an ntl optimization

Tue May 22 14:29:58 2007
------------------------
2.5.3:  * m albrecht: misc bugfixes
        * r bradshaw (and k kedlaya): finished implementing fast all sqrt's mod N.
                      bug fixes involving p-adics
        * b moretti (and b harris): numerical_approx method for calculus objects
        * y qiang: fix to expect interface output
        * w stein (and b barker): fix to save_session / load_session command
        * w stein (+ all linbox developers): include svn 2007-05-21 version of linbox in SAGE;
               this has c pernet's *very* fast charpoly / QQ and ZZ algorithm. 
        * w stein: lots and lots of build fixes to get closer to supporting SAGE on solaris.
        * w stein: notebook -- optimizations to make it feel much snappier (!?)

Sun May 20 10:05:31 2007
------------------------
2.5.2:   * r bradshaw: new SageX package -- many optimizations, improvements, etc. 
         * j cremona: install doc improvement
         * d harvey and w stein: updated ntl and switched to using an optimized build: 
            building takes longer, but the result is much much better
         * e kirkman: new sqllite graph database functionalikty
         * w stein: misc bug fixes
         * m vandenbergh (refereed by w stein): greatly improved functionality for 
                  multivariate polynomials over number fields; bug fixes
         * c witty: improvements to algebraic reals (minpoly, etc.)

Sat May 19 09:49:49 2007
------------------------
2.5.1:   * m albrecht: massively speed up multivariae polynomial arithmetic over QQ and GF(p)
         * d roe (refereed by r bradshaw): massively speed up the p-adics
         * d harvey: massively speed up computation of matrix of frobenius for hyperelliptic curves.
         * m abshoff: build improvements
         * n alexander: bug fixes
         * n dunfield: added "orbits" to permutation groups
         * j kantor: bug fixes
         * y qiang: dsage improvements
         * w stein: some little bug fixes
         * j walker: bug fix

Tue May  8 20:29:40 2007
------------------------
2.5:     * new packages:
             - flintqs
             - ipython-0.8.0 (w stein)
             - maxima-5.12.0 (w stein)
             - python-2.5.1 (y qiang) -- important bug fixes
             - tachyon3d-0.98beta (w stein)
         * m abshoff:  cputime bugfix for cygwin; *many* build fixes and improvements
         * m albrecht: major new singular library mode interface for SAGE which
                       provides the world's fastest polynomial arithmetic to SAGE (not
                       yet enabled by default!);  *many* build fixes and improvements
         * r bradshaw: tons of polynomial and power series optimizations;
                       Coleman p-adic integration; Kedlaya for genus > 1
         * t clemans:  source browser bugfix
         * p de napoli:fix some bugs in rationals and integers
         * d deshomme: (refereed by r bradshaw and w stein) very good support 
                       for Hida's quad-double field RQDF.
         * w hart:     quadratic sieve update (SAGE's qsieve command): "It is MUCH faster, 
                       especially for large factorizations, on account of having implemented the
                       large prime variant. it will factor an 81 digit number in under 30 minutes.
                       It is miles ahead of LiDIA, MAGMA and Pari, etc."
                       Another example: n = next_prime(2^110)*next_prime(2^120) has these
                       times on 32-bit 2Ghz linux: qsieve (107s), PARI (223s), Magma 2.13 (336s).
         * d harvey:   improvements, bug fixes. 
         * d kohel:    quaternion algebra improvements
         * r miller:   graph theory bug fixes
         * k minola:   tmp file clean bugfix; misc build fixes.
         * k minola, d joyner:  updated the conway polynomial table
         * y qiang:    important dsage bug fixes; improved unit testing. 
         * w stein and b moretti: major new symbolic calculus functionality
         * w stein:    rewrite of SAGE/maxima interface.
         * c witty:    (refereed by n alexandar) a new algebraic reals field 
                       (Qbar meet RR!).  mpfr improvements

Thu Apr 12 23:08:01 2007
------------------------
2.4.2:
         * r bradshaw: very very fast sagex new implementation of graph plotting code.
         * t boothby: added compression of javascript so notebook loads more quickly.
         * r miller: optimization to graph automorphism code
         * k minola and m albrecht: build fixes to linbox and sage_c_lib.
         * y qiang: transitioned dsage to use sqlite; many minor bugfixes
         * w stein: wrote a MuPAD interface for SAGE.
         * w stein: added restore and reset commands to SAGE, to (mostly) 
                    reset the state of SAGE and all interfaces very very 
                    quickly without having to quit and restart SAGE.
         * w stein: p-adic L-series (numerous improvements)
         * c witty (referee by r bradshaw): improvements to floating 
           point <---> rational conversions.

Tue Mar 27 09:21:10 2007
------------------------
2.4.1:   * j mohler: sped up number field arithmetic by a factor of 10 or so.
         * r bradshaw (with input from k kedlaya and d harvey): tons and tons of stuff, 
                      culminating in Coleman integration
         * d roe: hugely updated p-adics 

Sun Mar 25 18:13:00 2007
------------------------
2.4:
         * m albrecht: c-library wrapper for linbox that is seperate from main sage library.
         * m albrecht and g bard: implementation of the method of 4
           russians, i.e., fast dense echelon form and matrix
           multiplication over GF(2).
         * n alexander: misc; docstring-related things; lots of refereeing
         * b antieau: updates to programming guide
         * j bober (refereed by n alexander): improvement to random_prime, lcm, and gcd
         * t boothby and w stein: *syntax highlighting* in the notebook,
           use div when input cell not in focus; notebook bugfixes;
           marker in title when notebook is running.
         * r bradshaw: rationals from a tuple
         * b granger: updated package: numpy and libpng
         * m hansen: improvement to how sets work (symmetric difference, etc.)
         * d harvey: optimized [n] on formal group; misc speedups and bugfixes
         * d joyner: updated sage constructions guide.; improved piecewise functions
         * r miller (refereed by r bradshaw): graph plotting improvements, digraphs
         * r miller: open source 'nauty' -- the first every open source
                     implementation of Brendan McKay's isomorphism algorithm
         * j mohler (refereed by m albrecht): poly iter, misc.; move ntl wrapper to separate library
         * c citro, d roe, j balakrishan: misc stuff at arizona winter school
         * w stein: full text search of docs and source (use search_src and search_doc); best from the notebook.
         * w stein: first version of new modular abelian varieties package
         * w stein: extensive improvements to modular forms package
         * w stein: a new field, the ContinuedFractionField(), or CFF for short.
         * w stein: lots and lots of misc bugfixes and new doctests
         * w stein and a clemesha: moin moin wiki now uses twisted by default (for new moin moin installs)

Tue Mar  6 12:06:34 2007
------------------------
2.3:     * inclusion and integration into SAGE of IML 
           -- Integer Matrix Library; this allows for
           computing nullspaces.  E.g., if A is a 300x301 matrix with
           32-bit integer entries it finds the kernel (a single vector)
           in about 1-2 seconds.  
         * David Roe et al.: a completely new implementation of p-adics
         * W Stein, Clement P, Soroosh Y, and Martin A.: lots of optimization 
           work on linear algebra over QQ and GF(p); new optimized compiled
           sparse linear algebra over QQ and ZZ.  Speedups to multimodular,
           rational reconstruction, etc. 
         * W. Stein: lots of optimization of modular symbols computation. 
         * Carl Witty: many many improvements to how floating point 
           arithmetic works in SAGE.
         * David Harvey: improvements to p-adics heights code

Tue Feb 27 07:37:47 2007
------------------------
2.2:     * package upgrades:
            -- bzip2: upgrade from 1.0.3 to 1.0.4
            -- GSL: upgraded from 1.8 to 1.9
            -- SageX (Robert Bradshaw): Major update to SageX, including conditional 
                        expressions, massively optimized list indexing, etc. 
            -- IPython: upgrade to svn version for 2007-02-26
            -- matplotlib: upgrade to 0.90.0
            -- moin moin wiki: upgrade to 1.5.7
            -- gd: upgrade to 2.0.34
            -- libpng: upgrade to 1.2.16

        * software / patches:
            -- carl witty: improvements to mpfi interface; extra pari functions
            -- robert miller: code related to tachyon3d and plotting graphs. 
            -- bruin: rational enum
            -- deshommess: n-th root
            -- hansen: permgroup
            -- harvey: faster ntl interface
            -- kantor: numpy/sage improvements
            -- miller: implement raytraced 3d plotting for networks
            -- witty: new mpfi code

Fri Feb  9 00:57:45 2007
------------------------
2.1:     * william stein -- elliptic curve p-adic L-functions 
         * didider deshommes -- quad double real field
         * david harvey -- substantial update to p-adic height code.
         * david kohel -- misc bugfixes
         * stein, pernet, albrecht -- inclusion of linbox in SAGE, which vastly
            improves echelon, minpoly, charpoly in certain cases (over 
            ZZ, QQ, GF(p)).  This is turned off on linux/windows in some cases
            because of bugs that will be worked out later. 

Sat Feb  3 12:22:53 2007
------------------------
2.0.1:   * include ipython1 (parallel ipython)

Sun Jan 28
------------------------
2.0:     * released after much polishing and bug fixing.

Sat Jan 27 00:08:26 2007
------------------------
1.9:     * dorian raymer (and alex) -- click the "Documentation" link in the upper
           right of the notebook for interactive SAGE notebook browsing of the 
           full SAGE documentation!
         * carl witty -- mpfi updates
         * robert bradshaw -- fixed subtle bug in sagex; matrix arithmetic. 
         * stein -- notebook: stylistic changes; tons of doctests;
                    sagex'd integer_ring; sparse power and laurant series.
         * ifti b -- improve programming guide 
         * yi qiang -- dsage improvements

Wed Jan 24 16:49:31 2007
------------------------
1.8.2:   * sagex polynomials
         * mpfi -- optimized compiled implementation
         * reference manual -- expanded coverage.

Tue Jan 23 19:53:55 2007
------------------------
1.8.1:   * many small improvements to distributed SAGE: it's now braindead to 
           setup distributed SAGE and try it out! Just type dsage? to get going.
         * More graph theory (labels, tutorial)
         * update to real matrices.
         * nearly 10 misc bug fixes
         * optimization of sage startup (should be > twice as fast as in 1.8)

Mon Jan 22 14:09:24 2007
------------------------
1.8:     * Added sqlite. 

Mon Jan 22 13:20:22 2007
------------------------
1.8:     * New sage-cleaner: Greatly improved cleanup of tmp and killing of orphaned pro
cesses.
         * lots of updates to David Kohel's crypto package.

Wed Jan 17 18:55:33 2007
------------------------
1.8:     * sagex-- Robert Bradshaw added support for list comprehension
                   and +=, -=, etc. to SageX.

Mon Jan 15 14:58:42 2007
------------------------
1.7:     * moinmoin -- updated to ver 1.5.6; add jsmath support by default;
                       now is a standard component of sAGE
Sun Jan 14 02:51:45 2007
------------------------
1.7:     * openssl
         * pyopenssl
         * palp -- lattice and reflexive polytopes.

Sat Jan 13 13:12:47 2007
------------------------
1.7:     * Yi Qiang and Alex Clemesha: Added twistedweb2

Fri Jan 12 15:08:09 2007
------------------------
1.7:     * fix lots of little bugs listed in trac
         * optional package: upgraded trac package (which includes sqllite and clearsilver); for a long
           time this package couldn't build on python 2.5, i.e., sage >= 1.4. 

Thu Jan 11 22:53:00 2007
------------------------
1.6:     * Twisted-2.5.0
         * Stein: several bugfixes
         * Moretti: first version of calculus module
                    (not official yet -- try with from sage.calculus import *)
         * Kantor: ode solver improvements; dense matrices over real floats
         * Stein and Boothby: Misc notebook and tachyon improvements, e.g.,
                robots.txt; huge output link
         * Andrey Novoseltsev: Fixed some bugs in Sequences that 
         * Get SAGE to build on cygwin
         * upgrade ecm
         * Joel Mohler, William Stein: faster arbitrary precision complex numbers

Fri Jan  5 11:01:31 2007
------------------------
1.5.3    * upgraded to maxima-5.11.0
         * upgraded to numpy-1.0.1
         * upgraded to mercurial-0.9.3
         * partially ported SAGE to Cygwin (!) -- all but ecm 
           build automatically now: what remains: maxima interface issues

Sun Dec 31 22:21:28 2006
------------------------
1.5.2:   * added a sudoku command

Fri Dec  1 12:10:19 2006
------------------------
1.5.0:   * MPFR 2.2.1

Sat Nov 25 16:54:05 2006
------------------------
1.5.0:   * NUMPY -- included Numpy 1.0  (removed Numeric)
         * WEAVE -- included scipy's weave

Sat Nov 25 10:41:56 2006
------------------------
1.5.0:   * GAP 4.4.9.
         * Notebook facelift and robustness improvements
         * version 0.87.7 of matplotlib.
         * T. Boothby: Include libgd (fast graphics C library) and a Python interface (gdmodule)
         * Kate Minola's readline bugfix -- so SAGE now supports Itanium.
         * Jason Martin's GMP-for-Mac-core2 patch:  
                  http://www.math.jmu.edu/~martin/

Fri Nov 24 16:22:35 2006
------------------------
1.5.0:   * included Martin A's improved signal handling code.
         * notbook improvements:
               - faster switching between worksheets (doesn't pop up new tab or start new SAGE session)
               - Got rid of boxes around everything</li>
               - When cursor enters new box it is at *top* instead of bottom
               - Worksheets are now referred to in the url using their name rather than their number, just like in a wiki; go to an unused url to make a new worksheet.

Wed Nov  8 01:02:51 2006
------------------------
1.5.0:   * added a great new subprocess monitor features, so now even
           if you kill -9 the master, then subprocesses are all 
           properly killed off.  Awesome!

Tue Nov  7 23:35:17 2006
------------------------
1.5.0:   * GMP ecm-6.1.1
         * clisp-2.41
         * readline-5.2

Fri Nov  3 09:28:15 2006
------------------------
1.5.0:   * introduced variant of Pyrex called SageX
         * tons of matrix restructuring.

Fri Oct 27 23:11:20 2006
------------------------
1.4.2:   * truncate real number printing slightly to avoid confusion

Fri Oct 27 22:48:36 2006
------------------------
1.4.2:   * Removed R.<x,y> = ... notation.  Now, e.g., QQ['x,y'] automatically sets x, y.

Fri Oct 27 22:45:06 2006
------------------------
1.4.2:   * Added raw literals, 9392034r and 90283940R are raw integer literals, i.e., not preparsed; similar for floats

Thu Oct 26 15:33:12 2006
------------------------
1.4.2:   * Upgrade to gfan-0.2.2

Tue Oct 24 23:47:36 2006
------------------------
1.4.2:   * Added dependency resolution for Pyrex code to "sage -br".

Sun Oct 22 11:27:29 2006
------------------------
1.4.2:   * SAGE now has extensive graph theory; added networkx as 
         a standard component

Wed Oct 18 08:01:59 2006
------------------------
1.4.1:   * instead of the SAGE library build being HUGE, it now 
           takes about 40MB.  
         * building SAGE from scratch uses < 500MB during the whole process
         * upgrading Python package forces upgrade of all packages that rely on Python
         * revamped programming guide
         * greatly reduced overheading in starting doctests (esp on OS X)
         * upgraded Ipython
         * upgraded Macaulay2
         * matlab interface 
         * axiom interface
         * upgraded to clisp 2.40
         * upgraded to maxima 5.10
         * upgraded to pari 2.3.1
         * many trac-listed bug fixes and improvements
         * hg_sage, etc. 
          
Oct  1-5
------------------------
1.4:     * Create hg_sage, hg_doc, hg_scripts, etc., for working 
           with HG repositories easily from within SAGE.
         * Upgraded to gap-4.4.8.
         * IPython new 20061005 svn version (works with Python 2.5)
         * SAGE code: put the .pyx files where they belong (not in ext)
           VERY IMPORTANT NOTE:
              This is a *big* change to the internal structure of the
              library.  Unfortunately it breaks unpickling many things
              that may have been saved.  This had to be done; I
              couldn't organize things correctly at the beginning
              because of defficienies in Pyrex (that I fixed).
              There will be one more break when I switch to the new matrix
              class hierarchy that we recently wrote.  In general, since
              the thrust for SAGE 2.0 is pyrexing all types, pickling
              data to save it long-term is not stable until SAGE 2.0.
              I hate this, but don't see an easy way around it.  
         * mpfr -- upgraded to latest patch set.
         * pyrex -- new patch that adds support for __index__ method
           Also, now any type (e.g., Integer now) with an __index__
           method can be used to index into lists.
         * W.Stein -- Python 2.5 (!) (painful!)
         * matplotlib 0.86.7
         * New version of mwrank 08-23-06

Thu Sep 28 21:40:49 2006
------------------------
1.4:     * W. Stein -- Complex double field (CDF)
         * D. Harvey -- improvements to elliptic curve arithmetic
         * T. Boothby -- Implementd Real double field  (RDF)
         * Make PARI library always build the shared version mode,
           so Pyrex modules can share a single running instance of PARI.

Thu Sep 21 14:16:30 2006
------------------------
1.3.7.3:  * switched to mercurial for all source code tracking
          * added support for multiple branches of the SAGE library.
            Use 'sage -br branch_name' (or 'sage -b branch_name') to
            switch to using a given branch. 

Wed Sep  6 21:23:30 2006
------------------------
1.3.7:  * added to the core SAGE distribution:
             gsl - gnu scientific library
             twisted -- web networking framework
        * added dozens of patches from David Harvey, Martin Albrecht,
          David Joyner, etc., etc.!
          E.g., Z/nZ is in Pyrex; computation of p-adic E_2 without MAGMA. 

Tue Sep  5 12:24:32 2006
------------------------
        * upgraded numarray optional package to 1.5.2

Fri Jul 28 11:33:31 2006
------------------------
1.3.6:  * Added Givaro finite field package (not yet used by SAGE directly)
        * stein: Fixed many many bugs.
        * stein: Upgrade to gmp-4.2.1 (and got assembler support for GMP
          working on OSX Intel! -- quite tricky).
        * stein: moinmoin wiki interface for SAGE
        * david harvey -- added bernoulli_mod_p
        * tom boothby -- lots of improvements to notebook 
        * martin albrech -- some givaro wrapper code; restructing matrix code,etc.

Thu Jul 20 12:26:56 2006
------------------------
1.3.6   * Stein/Boothby/Kantor -- added tachyon raytracer to SAGE.

Wed Jul 19 10:59:53 2006
------------------------
1.3.6   * Stein/Hanke -- added mrange and xmrange multirange iterators.

Tue Jul 18 22:55:56 2006
------------------------
1.3.6   * upgrade to matplotlib-0.87.4

Thu Jul 13 23:05:55 2006
------------------------
1.3.5.2 * John Jones -- added bugfix for build process.
        * many many tiny bugfixes founded when preparing my talk.
        * Josh Kantor -- plot3dsoya package

Tue Jul  4 19:03:36 2006
------------------------
1.3.5.1 * added jsMath -- javascript Math rendering for the Notebook.

Sun Jul  2 23:41:25 2006
------------------------
1.3.5:  * Change range back -- too many problems, e.g., with efficiency,
           and one can always use "srange". 
         * maxima-5.9.3
         * Albrecht -- Matrix class: moved to Pyrex
         * magma interface -- misc improvements
         * notebook -- misc improvements
         * plotting -- improvements

Tue Jun 27 00:46:13 2006
------------------------
1.3.4.2: * modular symbols bugfix
         * notebook -- major robustness improvements
         * replaced range and srange in sage by SAGE variants (that return, 
           e.g., Integers) -- this is slower than the Python variants, of
           course, but much more sensible.  Use __builtin__.range for Python's
           range, which returns int. 
         * new documentation from david joyner.

Sun Jun 25 09:31:09 2006
------------------------
1.3.4: * martin albrecht: patched pyrex to properly deal 
                          with modules in different directories
       * notebook -- lots of work by Stein and Boothby
       * groups -- improvements by D. Joyner
       * misc bugfixes -- inspired by emails from Jon Hanke
       * pari -- builds without requiring X11 (Blair Kelly)

Mon Jun 12 02:42:53 2006
------------------------
1.3.3.3: * used profiler to reduce startup time
       * rewrote "sage <filenames> ... " so it directly
         runs via python (so faster), and gives sensible
         error messages when files don't exist or options
         are bad.

Mon Jun 12 00:31:22 2006
------------------------
1.3.3.3: * new version of matplotlib (0.83)

Sun Jun 11 22:33:23 2006
------------------------
1.3.3.3: * reorganized ipythonrc and matplotlibrc to be in 
           DOT_SAGE and have sensible defaults, which gets 
           around a major nuisance...


Wed Jun  7 17:27:37 2006
------------------------
1.3.3.1: * added GMP Elliptic Curve Factorization to the core SAGE distro
           Robert Bradshaw also made the SAGE/GMP-ECM interface much
           more user friendly. 

1.3.3: * new notebook interface (alpha test version!)

Mon May 22 13:15:37 2006
------------------------
1.3.2: * PARI 2.3.0 stable!

Mon May 22 09:08:14 2006
------------------------
1.3.2 * Tim Dokchitser: update to ComputeL.

Sun May 21 12:04:57 2006
------------------------
1.3.2 * documented dirichlet.py; fixed many issues with dirichlet characters

Sat May 20 14:03:36 2006
------------------------
1.3.2 * added autoload of $HOME/.sage/init.sage or SAGE_STARTUP_FILE
        User's need autoload of some customization file.
        Now if $HOME/.sage/init.sage exists, it will be autoloaded.
        Alternatively, if the environment variable SAGE_STARTUP_FILE
        is set then that file will be loaded.  The SAGE startup
        file can contain load and attach commands as well, and
        is fully preparsed.
        Removed the obscure 2-letter shortcuts from the SAGE 
        shell, e.g., "EC" for "EllipticCurve".  (These should go
        in user startup files).

Wed May 17 21:40:23 2006
------------------------
1.3.2: * pari 2.2.13  (lots of library code changes needed to make this work)
       * Martin Albrecht: new code for pari and singular
       * misc bug fixes
       * maxima -- added maxima.function 

Tue May 16 23:35:41 2006
------------------------
1.3.1: * Steven Sivek -- fractional ideals
       * Tom Boothby, Alex Clemesha, and W. Stein --
                some improvements to http_server1
                (e.g., embedded graphics--use plot(...).save('any_filename.png'))
       * Steven Sivek -- relative number fields code.
       * official colinux distro of SAGE (a "binary" for windows)
       * David Joyner -- tons more work on groups
       * W. Stein -- SAGE libdist "library distribution" (needs testing!); 
                     use "sage -ldist <version>" to make a library distribution
                     for install into existing Python install.
       * A. Gaer and W. Stein -- install_scripts() command in SAGE that 
                     makes scrips that start gap, singular, etc., 
                     Also, "sage -gap", "sage -singular", etc., start gap, singular, etc.
       * A. Klemm and W. Stein -- basic foundation for mathml output of objects

Mon May  8 08:58:56 2006
------------------------
1.3.0: * J. Cremona: new mwrank which contains the patches necessary for gcc 4,
         and fixes problem with pari factoring

Sun May  7 22:09:08 2006
------------------------
1.3.0: * D. Joyner: updated and re-organized groups code
                    (WARNING: much in here is half-way done, so dangerous!)
       * M. Watkins: new version of sympow; ver 1.018
       * M. Albrecht: 
            ** large patch to singular's "factory"
            ** include pyrexembed standard with SAGE.
            ** new CF -- pyrex interface between SAGE and factory
              (note: you must install the new patched version
               of singular before the cf code will build correctly;
               if not automatic, type
                   sage -f singular-3-0-1-2-2006-05-07.spkg)
       * M. Albrecht: Added pyrexembed to base SAGE install
       * W. Stein: improved darcs/sage integration:
             (1) now "sage -upgrade" uses darcs to upgrade
                 your sources and docs if you have darcs repos
                 for those.
             (2) type darcs_src? and darcs_doc? to see how to 
                 very easily use darcs directly from within SAGE;
                 also, using these *completely automates* setting
                 up your own local repository.
       * J. Hanke & W. Stein: fixed bug in fraction field element  
                 constructor.
       * W. Stein: if G is a plot, line, circle, etc., and you type
            sage: G
            ...
            then the log_html() will show G visually.  Click to get 
            big version. 
       * W. Stein and A. Clemesha: Wrote an html web server to include 
            with SAGE;
            to run it just type server_http1() at the SAGE prompt.
            This could be greatly improved.  Control-C works by
            pressing control-c in the SAGE window.
       * W. Stein and A. Clemesha: Added server_http1 (a web server for
           SAGE; hopefully there will be many and we'll see which is best.)
       * didier deshommes: some patches and improvements to log_*


Thu May  4 22:37:23 2006
------------------------
1.2.5: * Alex Clemesha: major update to plotting functionality.
       * W. Stein: added ecm-6.0.1.spkg optional package (for GMP-ECM),
         and added an ECM class; type "ECM?" for help.

Tue May  2 18:16:52 2006
------------------------
1.2.5: * W. Stein: doctests can now have for loops, e.g., 
    """
    sage: for i in range(3):
    ...    print i^2
    ...
    0
    1
    4
    """

Tue May  2 03:04:11 2006
------------------------
1.2.4: * David Joyner: piecewise functions
       * Joe Wetherell: preparser R.<x,y,z,w> = PolynomialRing(QQ,2^2) 
                        now works (bug due to W. Stein; fix due to Joe)
       * Martin Albrecht: made f.monomials() vastly more efficient
       * W. Stein: ZZ(5).is_square_free(); fix bug in save_session;
       * W. Stein: fixed major problem in mwrank interface; now ctrl-c, alarm,
                   etc., will work right.
       * W. Stein: wrote a minimal "polymake" interface

Tue Apr 25 16:52:39 2006
------------------------
1.2.4: * small fixes so clisp, gfan, and sympow build on Cygwin/Windows.

Fri Apr 21 08:27:55 2006
------------------------
1.2.4: * upgrade to pyrex 0.9.4.1 (trivial bugfix release)

Thu Apr 20 20:26:47 2006
------------------------
1.2.3: * Alex Clemesha: Plotting -- axis/labels are now much nicer
       * modular symbols bugfixes and improvements
       * Cygwin -- modified build process for gmp 4.2 and ntl so works.
       * gfan -- fix path problem that prevented gfan building
       * groebner_fan() function for multivariate-ideals; provides
         very nice access to most of the functionality of Groebner Fan,
         which is now included by default with SAGE.
       * Changed so that multi-variate polynomials rings get numered
         variables called x0,x1,x2,x3 (or whatever) instead of 
         x_0,x_1,x_2,x_3.  This is because (1) there were some
         problems with _ variables and Singular, and (2) in ASCII
         the underscores do not look good.  Note that latex typesetting
         still correctly includes _'s.  This change required changing
         hundreds of examples all over the source tree.
       * Numerous little improvements to multivariate polynomials, etc.,
         while making the Groebner Fan interface.

Sun Apr 16 23:03:56 2006
------------------------
1.2.2: * Upgraded to official Pyrex 0.9.4, which has many improvements.
         In the end, this meant numerous small changes to .pyx files.
         (Note -- overflow checking when coercing from sage/python ints
          to C ints disappeared in this new version of Pyrex, and I'm
          not sure I've put enough tests in yet to make up for it. I intend to.)
       * Added a number of patches, e.g., Joe Wetherell's:
            R.<x,y> = PolynomialRing(QQ,2)
       * tons of examples of polygon and line plotting.
       * switched to factorials.

Thu Apr 13 16:28:42 2006
------------------------
1.2.1: * Added non-gui matplotlib to SAGE core (and 
         dependencies: freetype and libpng); this will support
         SAGE's in-development mathematica-like graphing functionality.

       * Additions to the install guide based on mailing list discussions

Fri Apr  7 13:13:48 2006
------------------------
1.2.0: * Upgraded to Gap-4.4.7

Fri Apr  7 00:17:34 2006
------------------------
1.2.0: * Upgraded to Python-2.4.3

Thu Apr  6 14:42:05 2006
------------------------
1.2.0: * Added support for compiling SAGE from source on the new 
         Intel-based Macs. 
         This required changes to clisp-2.38.spkg, gmp-4.2.spkg,
         pari-2.2.12.beta.spkg, and singular-3-0-1-2.spkg, among
         other things.

1.2.0: * Upgraded optional matplotlib to version 0.87.2.
         (matplotlib will be included standard very soon)
         

Fri Mar 31 2006
------------------------
1.2.0: * GMP 4.2 bug fixes fix problems with huge integers crashing SAGE;
         now can convert huge integers to base 10 strings, etc.

Mon Mar 27 20:13:57 2006
------------------------
1.2.0: * added gmp-4.2 to standard SAGE

Sat Mar 18 11:43:23 2006
------------------------
1.2.0:  * added gfan to standard distribution of SAGE

March 2006:
1.1.1-2:  * Martin Albrecht -- added support to use poly rings of extensions
                               of finite fields via singular; etc. 
          * Didier Deshommes -- added ntl random numbers: 
                                ntl.ZZ_random  and ntl.ZZ_random_bits
          * Gonzalo Tornario -- wrote a "darcs with SAGE" howto
          * W. Stein -- improvement to prime enumeration using PARI
          * W. Stein -- fixed mpfr rounding mode creation bug (and 
                        changes lots of examples to reflect this)
          * W. Stein -- change real number behavoir some
          * Gonzalo Tornario -- fixed randomness in ZZ hash; also some linalg,
             smith forms for nonsquare matrices, ZZ.quotient( ... ) fix.


Thu Mar  9 04:15:34 2006
------------------------
1.1.0:  * Tentatively adopted darcs as revision control system.
        * W. Stein -- add Tim Dokchitser's L-functions package.  Type
           "Dokchitser?" for details and examples.  Also E.Lseries_dokchitser.
          If you're into computing L-series this package is *amazing*!
        * improvements to magma/gp/pari interfaces
        * real number precision now determined by digits of input, like
          in mathematica (and unlike in magma,pari,etc., etc.)  this is
          what people most preferred on the mailing lists.

Tue Mar  7 03:54:48 2006
------------------------
1.0.9: * Gonzalo Tornari -- large numbers of patches to improve performance,
         especially PARI <--> SAGE number conversions, etc.

Mon Mar  6 20:33:19 2006
------------------------
1.0.8: * Stein: maple; added tab completion, e.g., maple.[tab],
         and help, e.g, maple.sin?

Mon Mar  6 01:51:10 2006
------------------------
1.0.8: * Mike Rubinstein's Lcalc is now part of SAGE.  Type "lcalc?"  
         for more details.   This also adds a bunch of functions
         for elliptic curves; type "L.Lseries_[tab]" to see.
       * Kevin Buzzard's program for computing conjectural slopes
         of Hecke polynomials; Type buzzard_tpslopes? for details.
       * examples and improvement of height, sqrt behavior for QQ.
       * added Qing Liu's genus2reduction C program;  
         type "genus2reduction?" from the SAGE prompt for details. 
       * numerous small bugfixes 

Sun Mar  5 11:55:25 2006
------------------------
1.0.8: * bugfixes and optimization for modular symbols
       * put much sparse linear algebra over Q into Pyrex (compiled)
       * Jaap Spies: added rising_factorial and falling_factorial.
       * optimized permanents of matrices over Q

Fri Mar  3 03:11:19 2006
------------------------
1.0.8: * improvements to ctrl-c handling (added _sig_check macro)

Thu Mar  2 23:10:18 2006
------------------------
1.0.7: * Gonzalo Tornaria: vastly improved hashing and python<-->SAGE 
         integer conversions.

Thu Mar  2 03:06:05 2006
------------------------
1.0.7: * Gonzalo Tornaria: use Python's int/long hash for SAGE integers
         and rationals.

Thu Mar  2 02:56:06 2006
------------------------
1.0.7: * added tab completion and help for gap and gp interfaces, e.g., 
               gap.[tab], gp.[tab],   gp.matkerint?.

Wed Mar  1 22:46:11 2006
------------------------
1.0.7 * Stein: fixed bug in gap interface (data/extcode/gap/sage.g was trying 
        to write to /tmp/gapsage.log, which froze gap interface on some systems).

Wed Mar  1 18:46:10 2006
------------------------
1.0.7 * Stein: upgraded to PARI 2.2.12 (this entailed a large number of
        changes to the outputs of doctests that in any way use pari reals;
        also one line of the the mwrank source had to be changed).

Wed Mar  1 06:40:50 2006
------------------------
1.0.7 * Stein: expect -- get rid of infinite loop on startup in some
                  cases when client system is missing.

Tue Feb 28 01:12:11 2006
------------------------
1.0.7: * Stein: For MAGMA interface: added extensive tab completion
         and interactive IPython documentation support -- type
         "magma.[tab]" for list of all Magma intrinsics (takes a while
         the first time, then instant); type "magma.function?" for
         help on that function.  If x=magma(...)  is a MagmaElement,
         type x.[tab] for the functions that can take x as first
         argument, and x.FunctionName? for help on a given function.
         Implementing this is a template for how to do this for other
         systems, e.g., PARI, Macaulay, Singular, etc.  Volunteers?

Sun Feb 26 20:14:16 2006
------------------------
1.0.7 * Jaap Spies -- found that PARI "gen" type name is confusing,
        since it clashes with X.0 "is" gen(X).  So I changed it to pari_gen.
        This required changing a lot of other code that used "gen" all over.

Fri Feb 24 23:42:29 2006
------------------------
1.0.6 * Stein/Tornaria: vast speedups of integer and rational hashing
      * improved robustness of maxima interface
      * change ordering of polynomials; now compares degrees then coefficient
        of highest degree term then down (since higher degree terms are
        "more significant").
      * refactoring/restructing of constants and adding template
        for functions
      * doctest don't leave tons of directories in .sage/tmp; also
        added "sage -cleantmp", which deletes all directories in 
        .sage/tmp not actively in use on current machine.  (NOTE:
        we do *not* do this automatically since if your home directory
        were NSF exported to a cluster, then starting SAGE on and node
        would kill the .sage/tmp for all processors on other nodes).

Mon Feb 20 17:34:55 2006
------------------------
1.0.5 * unified and improved coercion of objects to interface;
        now just defined "def _xxx_init_(self):" for system xxx
        to return a string repn of that object that creates it
        in system xxx.  Caching is done automatically, unless
        otherwise requested.

1.0.5 * Alex Clemesha: new version of misc/constants.py; improved texing,
        added twinprime, merten, and brun's constants. 


Sun Feb 19 16:40:23 2006
------------------------
1.0.5 * fixed bug when attaching/loading .py files from .sage files.
      * Joe Weening -- new GMP spkg-install script.

Fri Feb 17 14:43:20 2006
------------------------
1.0.5 * added a bunch of new code by Gonzalo Tornaria (mostly improvements
        to PARI c library functionality)
      * added matrix permanent computation for possibly non-square matrices
        by Jaap Spies

Thu Feb 16 00:50:33 2006
------------------------
1.0.4 * removed autoconf prereq
      * documented sets/set.py and greatly improved code (examples for
        every function, etc.)

Wed Feb 15 22:14:12 2006
------------------------
1.0.4 * fixed bug that Justin Walker found in doctest where
        it wouldn't work when giving multiple input files in different directories
      * added load and attach support for .py file (in addition
        to .sage and .spyx files). 
      * Naqi Jaffery: fixed problem in sparse linear algebra 
        constructor

Mon Feb 13 13:06:19 2006
------------------------
1.0.4 * added maxima online help interface ('? command'),
        maxima.help(...), maxima.example(...), maxima.demo(...)

Mon Feb 13 07:42:13 2006
------------------------
1.0.3 * some small modification to logging (control-d known
        to mess up sequence) and latex'ing
      * Kiran Kedlaya -- rings, ideals, etc. that use Macaulay2
         (create using MPolynomialRing(..., macaulay2=True);
          can be used to compute Groebner basis over Z).
      * Martin Albrecht (sage.libs.ntl update): 
         - ntl.GF2X() and all dependent types (GF2E,GF2E_modulus,mat_GF2E) now 
           additionally accept:
           - Polynomials__mod_p now, int, Integers
         - added mat_GF2E.transpose()
         - ntl.mat_GF2E(<size>,1) may be used as a row vector now, e.g.:
               m = ntl.mat_GF2E(10,1)
               m[1]=ntl.GF2E("0x1")
           no tuple required
         - BUGFIX: check for modulus when constructing a mat_GF2E

Sun Feb 12 18:08:46 2006
------------------------
1.0.3  * added a very primitive "search_sage" command for searching 
         the SAGE source code from within SAGE. 


Sun Feb 12 17:41:32 2006
------------------------
1.0.3  * added "<string>?" and "?<string>" for searching of help
         when using one of the interfaces (via %gap, etc.).

Sun Feb 12 00:49:45 2006
------------------------
1.0.2   * fixed bug found by Justin Walker in loading .spyx files
          not in the current directory.
        * improved reloading of attached .spyx files (no blankline needed)
        * new "iload" interactive loading feature: 
               iload "filename.sage"
          loads it line by line (almost?) exactly as if you typed it in.

Sat Feb 11 23:58:26 2006
------------------------
1.0.2   * macaualy2 interface bugfixes
        * created a new latex and html session log facility.  
          type "log_dvi?" and "log_html?" for more details.
          (using this led to many improvements in the latexing
           methods for objects all over sage).

Fri Feb 10 03:36:19 2006
------------------------
1.0.1   * sage-mindist; first "minimal" sage tarball for install
          into an existing Python environment.

Fri Feb 10 03:35:18 2006
------------------------
1.0.1   * fixed -5*P for P on elliptic curve bug. 
1.0.1   * improvements to mathematica interface; e.g., good saving and
          loading of objects; support for latex output.
1.0.1   * maple latex output
1.0.1   * added ability to pull data from SAGE into other command-line sessions
           (1) type %magma, %maple, %singular, %gp, or whatever
           (2) E.g., if you're in gp, type gp(sage expr) to evaluate
               the sage expr and bring it into your gp session:
                  sage: E = EllipticCurve([1,2,3,4/5,1/191])
                  sage: %gp
                  gp: E
                  E
                  gp: gp(E)
                  [1, 2, 3, 4/5, 1/191, 9, 23/5, 1723/191, ...
                  gp: %magma
                  magma: E:=magma(E)
1.0.1    * elliptic curve ranks now computed with mwrank shell program
           by default.
                  

Thu Feb  9 11:10:47 2006
------------------------
1.0.1    * Kiran Kedlaya and David Roe: Interface to Macaulay2 (use
           via macaulay2('stuff')). 

Wed Feb  8 00:19:43 2006
------------------------
1.0.1    * Steve Linton: new gap interface
         * Stein & Fernando Perez: magic interaction modes with 
                         interfaces (via %blah)
         * David Kohel: lots of new schemes code (e.g., jacobian arith)
         * Steven Sivek: new sloane's tables of integer sequences code
         * Joe Wetherell and Gonzalo Tornaria: SAGE_ROOT/examples/latex_embed

Thu Feb  2 22:32:57 2006
------------------------
0.10.13: * improvements to base_ring behavior for rings and schemes
           (all suggested by David Kohel)
         * improvement to sqrt suggested by David Joyner
         * added Gregg Musiker's Maple tutorial (to reference manual)
         * implemented "sage -t filename.sage".  
         * environment fix to sage-doctest (Wilson Cheung)

Tue Jan 31 19:11:13 2006
------------------------
0.10.13: added use of killpg in interfaces/expect.py to much much 
         more robustly kill child processes (this was a major
         problem until now)

Mon Jan 30 02:43:09 2006
------------------------
0.10.12: much testing and documentation improvements; 
         added "make test"; tests should not take into account
         64-bit computers and pass on them too.

Sat Jan 28 04:50:05 2006
------------------------
0.10.11: minor fixes to watkins-ec to work with newest cygwin/windows.

Sat Jan 28 03:02:00 2006
------------------------
0.10.11  Eliminated gnuplot from inclusion with SAGE (bad license), and libpng.
         Upgraded clisp
         Upgraded IPython

Fri Jan 27 01:14:48 2006
------------------------
0.10.11   I've added a new option for sage0.10.11 to make it easier to hunt
          down something you remember from the SAGE source code.  Just type
                "sage -grep <string>"
          to find all occurences of <string> in the SAGE source code. 


Thu Jan 26 20:49:24 2006
------------------------
0.10.10 -- totally rewrote complex numbers and added a wide range of
           transcendental member functions for complex numbers (via
           PARI, but with care taken to get precision right).  Also
           rewrote the functions/transcendental.py to use this.

Thu Jan 26 13:04:14 2006
------------------------
0.10.10  -- fixed problem in real number coercion precision.

Wed Jan 25 14:51:26 2006
------------------------
0.10.9 -- schemes: affine patches, projective_embedding for affine space.


Wed Jan 25 14:27:13 2006
------------------------
0.10.8 -- schemes -- much more flexible (Projective/Affine)Space constructors.

Wed Jan 25 14:26:25 2006
------------------------
0.10.8 -- PARI; fixed missing "make install-data", so can compute Galois
          groups for degree > 7.

Wed Jan 25 02:02:00 2006
------------------------
0.10.7 -- adding ability to run SAGE/Mathematica/etc. via ssh and 
          a remote server, just because it would be interesting
          to see it work.  Uses files to move arbitrarily complicated
          SAGE data back and forth to remote sessions on other computers.

Tue Jan 24 23:27:23 2006
------------------------
0.10.7 -- naming cleanup -- all pyrex files that started with _
          (underscore) now don't.  changing this meant changes all
          over the system, etc.  better now than later. 

Tue Jan 24 21:19:32 2006
------------------------
0.10.7 -- Martin Albrecht: ntl library interface update.

Tue Jan 24 16:08:37 2006
------------------------ 
0.10.6 -- made maple interface more robust.

Tue Jan 24 15:12:39 2006
------------------------
0.10.6 - i/o speedup and robustness improvement for following interfaces:
         magma, Gap, maxima, kash, mathematica, maple

Tue Jan 24 15:04:38 2006
------------------------
0.10.6 - gap (changed memory command line option for startup) to depend
         on 64-bit/32-bit


Tue Jan 24 03:05:32 2006
------------------------
0.10.6 -- file i/o tricks to vastly increase efficiency of inputing
          large strings into GP and Singular under SAGE.  (GAP might
          also be possible, in some important cases, etc.)


Mon Jan 23 23:49:45 2006
------------------------
0.10.6 -- fixed problem where interfaces would continue to
          run even after SAGE terminated (esp, maple, kash, maxima).
          Now this isn't a problem at all, since they're all sent their
          respective "quit" commands on exit.   

Mon Jan 23 20:48:18 2006
------------------------
0.10.6 -- fixed problem in  gap_gpl_packages-4.4.6_2.spkg install script;
          it wasn't actually loading the packages after installing them,
          since the lines were gap() instead of gap.eval()


Mon Jan 23 12:32:18 2006
------------------------
0.10.5 -- martin albrecht's improvments to finite field coercion 

Sun Jan 22 20:30:18 2006
------------------------
0.10.4 -- added Joyner's examples: crt_basis, free_abelian_monoid_element,
          free_module_element, integer_ring_mod, etc., etc.
       -- added unit part to factorizations.   
       -- many small bug fixes related to factorization, square free parts.
       -- added R[['t']]  notation for constructing power series rings.
                
Sun Jan 22 20:24:25 2006
------------------------
0.10.4 -- added GL -- general linear group with a very little amount
          of functionality. 

Sun Jan 22 19:37:20 2006
------------------------
0.10.4 -- created a GapRep class in interfaces/gap.py to make it easy
          to make objects that *robustly* wrap objects whose underlying
          implementation is in Gap (e.g., permutation groups, linear
          groups, etc.).


Sun Jan 22 18:24:17 2006
------------------------
0.10.4 -- * improvement to Sequence type so default universe is chosen from
            whole collection of elements instead of just first. 


Sat Jan 21 12:25:14 2006
------------------------
0.10.4 -- * new ipython: version 0.7
          * new zodb: version 3.6 

Fri Jan 20 23:02:52 2006
------------------------
0.10.3 -- * added a *bunch* to the reference manual
          * added to constructions and the tutorial, and fixed
            problems (esp., regarding singular interface).

Fri Jan 20 15:32:17 2006
------------------------
0.10.3 -- * doctest: fixed line numbers in doctest errors
          * singular 3-0-1-2

Fri Jan 20 11:45:46 2006
------------------------
0.10.3 -- * more on schemes
          * replaced all _add, _sub, _mul, _div's by 
            _add_, _sub_, _mul_, and _div_, which is more systematic. 


Wed Jan 18 22:47:33 2006
------------------------
0.10.3 -- * add first version of new facility for *very* easy use of 
            compile-able code for users.   Just make a .spyx file and 
            load or attach it as usual.  It's compiled and will execute 
            really quickly if you know how to use Pyrex (e.g., cdef
            ints, etc.).  See examples/pyrex.

Wed Jan 18 03:31:20 2006
------------------------
0.10.3 -- * new shorthand notation for constructing polynomial rings:
              sage: Q['x,y,w']
              Polynomial Ring in x, y, w over Rational Field

Mon Jan 16 17:23:53 2006
------------------------
0.10.3 -- * Martin Albrecht <malb@informatik.uni-bremen.de>: 
              - NTL GF(2^e) linear algebra interface
              - more functions for multivariate polynomials
          * David Joyner -- update to maxima ODE solver
          * Added gnuplot plot3d_parametric with examples.

Sun Jan 15 17:05:44 2006
------------------------
0.10.3 -- * added Sequence class.  Type help(Sequence) for more information.
       -- * added support for homomorphisms of (some) rings.
             If R is a ring, type R.homomorphism? for more info.
       -- * new mathematical constants classes with symbolic manipulation: 
              pi, e, etc.  Type help(sage.misc.constants) for more details.

Thu Jan 12 13:00:41 2006
------------------------
0.10.1 -- * added mwrank (interpreter) interface (not C++ library).

Thu Jan 12 02:45:50 2006
------------------------
0.10.0 -- * modified moved a number of optional packages into standard:
             - maxima, numeric (upgrade), clisp (new), 
               gnuplot (new), gnuplotpy (new)
          * upgraded singular build scripts a little


Wed Jan 11 01:03:14 2006
------------------------
0.9.34 -- basic constants (e and pi)
       -- coercion to interfaces takes an argument (e.g., _gap_, 
          _singular_ functions)
       -- re-organized website

Tue Jan 10 02:56:27 2006
------------------------
0.9.33 -- polynomial factorization over general finite fields (via pari);
          also slighly changed representation of elements of general finite
          fields for robustness.


Mon Jan  9 22:55:04 2006
------------------------
0.9.32 -- *finally* got object saving and loading working wonderfully!!   
          Added a self.db method for sage objects that 
          saves objects to SAGE_ROOT/db.  Use db_load to reload them.   
          Added a handy save_session command for saving all named variables 
          defined in the current session to a .sobj file dictionary.
          You could save multiple sessions and bring in all the variables
          defined from all sessions into one session (you get a bunch
          of dictionaries, one for each session).  cool.
          

Sun Jan  8 03:24:14 2006
------------------------
0.9.31 -- more improvements of object persistence 
             (BUT -- object persistence is *not* done and is not yet supported)
       -- rewrite of reference manual style; hopefully clearer
       -- new optional package "extra_docs-2006-01" with 
          documentation for many of the systems that are
          accessible from SAGE and libraries included with SAGE.


Sat Jan  7 02:55:18 2006
------------------------
0.9.30 -- object persistence: save, dump, etc. methods;
          added a huge amount of these all over SAGE; required
          modifying almost every single file in SAGE.  Also
          added lots of __cmp__ methods. 

Fri Jan  6 08:14:37 2006
------------------------
0.9.29 -- same as 0.9.28, to avoid (or create?) potential confusion


Fri Jan  6 07:13:19 2006
------------------------
0.9.28: * Object Persistence started: 
            added save (=dump) and dumps methods to all SAGE objects, and 
            support for more of them.    Also, load method to recover objects.
 
0.9.28: * computation of galois groups of number fields and polynomials
          using both PARI and KASH.

Thu Jan  5 04:53:02 2006
------------------------
0.9.28: * new versions of code from David Kohel:
            - monoids (whole directory): A bit more documentation
            - algebras (whole directory): A bit more documentation
            - rings.arith.py: hilbert_symbols moved from 
                              algebras.quaternion_algebra to rings.arith
            - rings.padics: New directory of p-adic ring and 
                            field functionality (incomplete)
            - schemes -- total rewrite  !! WARNING !! -- schemes (except
               for elliptic curves, are seriously broken right now)

Wed Jan  4 03:18:46 2006
------------------------
0.9.28: * changes and improvements to groups and maxima interface.
        * improved the programming/developers guide

Tue Jan  3 12:49:42 2006
------------------------
0.9.27: * misc bug fixes and robustness improvements to interfaces.

Tue Jan  3 03:31:35 2006
------------------------
0.9.27: * upgraded to pexpect version 2.0 (from 0.999); this entailed
          minor changes to interfaces/expect.py

Mon Jan  2 23:16:30 2006
------------------------
0.9.27: * added latex'ing for maxima object (using latex(f) of f._latex_(),
          and preview with view(f)).

Mon Jan  2 09:21:59 2006
------------------------
0.9.27: * made maxima optional package (requires user has a lisp interpreter)
        * removed ascii art from maxima interface
        * made maxima interface more robust

Sat Dec 31 16:56:39 2005
------------------------
0.9.27: * sage (shell) eval command now calls _eval_(self) method before
          calling builtin eval command.  Thus, e.g., eval(s) makes sense
          for expect interface objects.

Sat Dec 31 12:24:12 2005
------------------------
0.9.27: * upgraded to ipython-0.7.0.rc4

Fri Dec 23 11:15:03 2005
------------------------
0.9.27: * fixed bug Joyner found in comparison of laurent
          and power series (not symmetric)

Thu Dec 22 20:30:13 2005
------------------------
0.9.26: * added SloaneEncyclopedia object, which is a local on-disk
          version of Sloane's encyclopedia.  AUTHOR: Steven Sivek.

Thu Dec 22 16:37:01 2005
------------------------
0.9.26: * rewrote the install guide (w. stein)
        * fix zlib build problem (thanks to Gary Zablackis <gzabl@yahoo.com>)

Tue Dec 20 20:20:48 2005
------------------------
0.9.25: * misc/functional.py; categories/* 
           -- updated (many examples) by David Joyner

Tue Dec 20 19:04:06 2005
------------------------
0.9.25: * Created an interface to Maxima

Mon Dec 19 23:06:24 2005
------------------------
0.9.25: * new singular examples (submitted by David Joyner)

Mon Dec 19 19:04:44 2005
------------------------
0.9.25: * fixed memory leak in integer/rational --> string conversion
0.9.24: * improved build system; many more doctests (submitted by D. Joyner)

Sat Dec 17 19:52:53 2005
------------------------
0.9.23: * fixed all known ctrl-c causes infinite loops problems; this
          involved modifying the pari C library and changing the
          pexpect interfaces.

0.9.23: * many small fixes so all the doctests pass on OS X.

Sat Dec 17 11:58:51 2005
------------------------
0.9.23: * switched back to readline 5.0.1, since pressing [delete]
          would crash python under readline 5.1 on most platforms. 

Wed Dec 14 16:16:37 2005
------------------------
0.9.22: * Windows -- fixed bug in PARI build on Cygwin, so now the Windows
                     PARI is compiled with GMP (faster) and readline (nicer)

Wed Dec 14 02:03:10 2005
------------------------
0.9.21: * Much enhancement of flexibility of the build system.  
          (Note: This temporarily breaks "sage -upgrade" on currently 
           installed systems.  The fix is easy: type 
           "sage -f sage_scripts-0.9.21", ignore the error, 
           then type "sage -upgrade" twice.)

0.9.21: * fixed bug in ngens -- returned 0 by default instead of len(self.gens()).

0.9.21: * included galois groups tables in PARI distro.

Upgraded to readline 5.1

Tue Dec 13 01:04:49 2005
------------------------
0.9.20: * "sage -upgrade" and optional package installation now 
          supported for pre-built (binary) versions of SAGE.


Mon Dec 12 15:02:08 2005
------------------------
0.9.19:  * many improvements to the build process, so SAGE (almost?) builds on 
           (some) Solaris platforms.   
         * upgraded to new version of mpfr: 2.2.0

Wed Dec  7 11:18:42 2005
------------------------
0.9.17: * Added integral_hecke_matrix for modular symbols spaces.
        * Improved cardinality function for elliptic curves over finite fields.

Tue Dec  6 20:41:23 2005
------------------------
0.9.17: * index command for free modules
        * intersection of free modules over Z.

Mon Dec  5 20:44:08 2005
------------------------
0.9.16: * added "R^n" notation for creating the free module of rank n over R.
        * many additions to free_module.py docs and code improvements

Mon Dec  5 10:35:23 2005
------------------------
0.9.16: * added algorithm='kash' option to n.factor for n an integer.


Sun Dec  4 23:35:06 2005
------------------------
------------------------
0.9.15: * made "sage -t path/to/file.ext" work for nontrivial paths
        * free modules -- submodule, span, etc. now work in a sensible way;
                          more documentation; inner products on 
                          non-ambient modules
        * better error handling when mathematica or other slave processes
          "halfway" starts, e.g., because of missing license information.
        * singular polynomials now print with *'s and ^'s (short mode off 
          by default).

Tue Nov 29 20:34:49 2005
------------------------
0.9.14: * added "-np" no output prompt option to sage. 

Tue Nov 29 01:40:56 2005
------------------------
0.9.14: * Now interrupt.pxi and interrupt.h are all the same (via cp during build)
        * Also fixed bug that lead to hangs when using alarm() function.


Sun Nov 27 21:58:39 2005
------------------------
0.9.13: * greatly modified the pexpect interfaces code so now, e.g.,
          gap('2+2') makes a new gap object, whereas gap.eval('2+2') 
          evaluates the expression and returns a string. 
          Also fixed bugs in the interfaces that caused infinite loops.

0.9.13: * added KASH/Kant interface and optional packages.


Tue Nov 22 00:59:40 2005
------------------------
0.9.12: * fixed alarm command so it works even when calling C code
        * rewrote the Stein-Watkins database interface so startup
          is immediate (using Python's bz2.BZFile module).

Mon Nov 21 01:19:02 2005
------------------------
0.9.11: implemented q_expansion_basis and q_eigenform for 
        modular symbols spaces; added q_eigenform for elliptic curves also

Sun Nov 20 16:03:07 2005
------------------------
0.9.11: added "sage -optional" command that lists installed and
        available optional packages.

Sun Nov 20 04:16:45 2005
------------------------
 0.9.11: made sage not preparse lines beginning with "!".

Thu Nov 17 06:06:11 2005
------------------------
 0.9.11: added Joyner's updated permgroup.py

Wed Nov 16 18:09:17 2005
------------------------
 0.9.9b: * fixed bug in multi-modular charpoly computations (insufficient bound)
         * Added Heilbronn* commands for listing Heilbronn matrices 

Wed Nov 16 01:09:44 2005
------------------------
 0.9.9: Incorporated David Joyner's "SAGE Constructions" documentation.

Tue Nov 15 04:53:49 2005
------------------------
 0.9.8: added hilbert_class_field and hilbert_class_polynomial for quadratic number fields


Tue Nov 15 03:37:38 2005
------------------------
 0.9.8: Fixed bug so that ctrl-c in mwrank crashed SAGE. The problem
        was that I was using signal interrupts in a Pyrex constructor,
        which is not safe.

Tue Nov 15 02:35:15 2005
------------------------
 0.9.8: SAGE now build with readline support on OS-X; SAGE maybe no longer
        supports building on OSX 10.3  (?)

Tue Nov 15 02:34:34 2005
------------------------
 0.9.8: improved E.gens() (better error messages, raises exception, uses two_descent results)


Tue Nov 15 00:18:14 2005
------------------------
 0.9.7d: added linear_code_bound command, which looks up
         minimum distances bounds on linear codes from a website.

Mon Nov 14 21:57:05 2005
------------------------
 0.9.7c: new version of Singular: Singular-3-0-1


Mon Nov 14 17:59:40 2005
------------------------
 0.9.7b: Added heegner index computation for odd rank curves.


Sun Nov 13 21:52:54 2005
------------------------
 0.9.7: Hyperelliptic and plane curves (some functionality)
 0.9.7: Access to Sloane's tables of integer sequences (via the internet)

Sun Nov 13 16:15:24 2005
------------------------
 0.9.7: Added maple interface. 


Sun Nov 13 03:44:19 2005
------------------------
 0.9.7: some modular symbols optimizations


Fri Nov 11 04:29:33 2005
------------------------
 0.9.6: * added "-update and -update-build" options to sage
        * added "-gdb" option to sage to run under the GNU debugger (the
          idea/trick to implement this came from Joe Wetherell). 
        * gap_reset_worspace(n) sets the size of the default workspace to n.


Tue Nov  8 19:50:29 2005
------------------------
 0.9.5: * slightly modified prereq script.
        * made "sage" the name of sage that appears in the process list.

Tue Nov  8 19:00:19 2005
------------------------
ntl-5.4.1: Fixed OSX bug in NTL build process (no dylib) that made anything
           in SAGE that used NTL worthless (e.g., polynomials over finite 
           fields).

Mon Nov  7 20:48:36 2005
------------------------
 0.9.5: * Switched from IPython time command back to my own, so it will
          work in .sage scripts.
        * Fixed bug in preparser in that it was not completely ignoring
          comment lines.
        * Made it so attach reloads files whenever a file is changed, 
          not only when you enter a blank line at the SAGE prompt. 
          The reload occurs *before* your line of code is executed.
        * If there is a file "attach.sage" in the current directory,
          SAGE will *automatically* attach that file at startup.

Sun Nov  6 22:33:12 2005
------------------------
 0.9.4: Changed .ipythonrc to ipythonrc, since it was confusing
        having it as a dot file in the SAGE directory.
 0.9.4: Added an examples directory, where I'll regularly put
        more and more examples of .sage scripts.    These
        will regularly be updated.
 0.9.4: spkg's can now be either tar.bz2 or tar files (no compression).

Sun Nov  6 16:06:05 2005
------------------------
 0.9.3: Improved the sage testing scripts.
 0.9.3: Switched to using PARI 2.2.11.alpha instead of the CVS version.
        This fixes a bug in computing the conductor of the curve 3006d,
        and avoids other possible stability problems.

Sun Nov  6 14:25:16 2005
------------------------
 0.9.3: moved the $SAGE_ROOT/sage script to local/bin/sage-sage and
        made a much simpler $SAGE_ROOT/sage script, which shouldn't
        ever change.  Now you can copy $SAGE_ROOT/sage to e.g.,
        /usr/local/bin/, make one change at the top.

Sat Nov  5 17:41:39 2005
------------------------
singular-3.0.9.1: Fixed a problem in the install that made Singular 
    fail on Microsoft Windows when one moves the install directory
    (this bug also broke Singular for the Windows binary).  This
    did not affect Linux or OS X.

Fri Nov  4 16:04:59 2005
------------------------
 0.9.1: Complete restructing of the entire SAGE build system.


Mon Oct 31 10:49:21 2005
------------------------
 0.8.5: * changed sage install scripts to touch files when extracting
          from archive, to avoid infinite recursions in the build process
          if the clock on your computer is messed up.

Thu Oct 27 01:31:30 2005
------------------------
 0.8.4: * Added some functions submitted by Dadid Joyner.
        * Fixed x^n when x is a float and n is an integer. 

Tue Oct 25 06:09:05 2005
------------------------
 0.8.3: Added Denis Simon's 2-descent program for curves over Q.
        If E is an elliptic curve over Q, this is the function
        E.simon_two_descent

Tue Oct 25 04:54:01 2005
------------------------
 0.8.3: Wrote a nice mathematica <--> SAGE interface
 0.8.3: Greatly improved error handling in all interfaces.
 0.8.3: Improved calling functions via MAGMA interface


Mon Oct 24 06:00:08 2005
------------------------
 0.8.3: Added a "rename" feature, as suggested by Joe Wetherell. 
        On many sage objects X you can use X.rename(new_name) to
        make X print as new_name.  Use X.reset_name() to reset X
        back to its original printing value.   (Implementing this
        requires changing a lot of code, so it doesn't work for 
        everything yet.)

Sat Oct 22 16:09:02 2005
------------------------
 0.8.1: small bugfixes to the build process on various machines. 

Sat Oct 22 05:04:08 2005
------------------------
 0.8.0: *Singular*: The Singular computer algebra system is now a part of 
        the standard SAGE distribution.
 0.8.0: Added interface to Octave (useful if you have octave installed).
 0.8.0: Improved interfaces to Singular, GAP, PARI, Magma, etc., to
        simulate limited wrapping and python notation for accessing
        objects and their methods. 

Fri Oct 21 15:07:26 2005
------------------------
 0.8.0: fixed small bug in preparser (error found by Kyle Schalm) 
        where certain ints wouldn't be wrapped in ZZ().

Fri Oct 21 14:02:29 2005
------------------------
 0.8.0: Fixed expect interface so works on OS X (needed to decrease timeout).

Fri Oct 21 07:00:36 2005
------------------------
 0.8.0: Upgraded to PARI 2005-10-21 CVS.

Fri Oct 21 06:33:28 2005
------------------------
 0.8.0: *GAP*: The core of GAP is now a part of the standard 
        SAGE distribution.  The group databases are a separate download
        from the database website.

Mon Oct 17 23:47:28 2005
------------------------
0.7.14: Upgraded to ZODB3-3.5.1 final.

Mon Oct 17 12:55:50 2005
------------------------
0.7.14: Changed behavior of elliptic curve gens command to print warning
        and set flag if computation of generators is not certain, but
        not to raise an exception.  This is good because *often* one just
        needs one generator or knows that in fact the mwrank answer is
        correct anyways.

Mon Oct 17 03:51:48 2005
------------------------
0.7.13: Rewrote the tutorial (now the examples work as advertised, because 
        of my new documentation testing system).

0.7.13: Added a few minor changes so the tutorial made more sense.

0.7.13: Fixed bug in SAGE call to SEA.    

Fri Oct 14 11:00:08 2005
------------------------
0.7.12: Added David Joyner's PermutationGroup package (first version).


Fri Oct 14 10:35:05 2005
------------------------
0.7.12: included new version of David Kohel's (non)-commutative 
        algebra code.


Thu Oct 13 21:38:47 2005
------------------------
0.7.12: changed meaning of "x in S" again; now it means S(x) succeeds.
        This agrees with the meaning as defined in Alex Martelli's
        "Python in a Nutshell".

Tue Oct 11 17:11:02 2005
------------------------
0.7.10: * minor bugfix in printing code

Mon Oct 10 03:44:47 2005
------------------------
0.7.10: * added "hensel_lift" method for elements of Q[x], via
          corresponding PARI C-library function.

Sun Oct  9 18:34:27 2005
------------------------
0.7.9: * changed the standard meaning of "x in S" in SAGE, 
         (for the most part).  Now it means "there is a *canonical*
         map that sends x to an element of S".  This is intermediate
         between the meaning of "in" in MAGMA (which is S!x doesn't 
         crash) and what it was in SAGE before (basically 
         x.parent() == S).

       * lots of little changes that were needed to make
         all examples work after making changes. 


Sun Oct  9 17:14:01 2005
------------------------
0.7.9: * more work on implementing separate additive and
         multiplicative orders
       * made gcd, xgcd, lcm more uniform (only defined
         for EuclideanDomainElements; use _gcd, etc. in derived
         class just like for arithmetic)

Fri Oct  7 13:30:19 2005
------------------------
0.7.9: * changed "order" to mean additive order
         for module and ring elements, and 
         multiplicative_order for the multiplicative order.


Thu Oct  6 22:58:08 2005
------------------------
0.7.9: * Upgraded to Python 2.4.2 (bugfix release)


Wed Oct  5 04:49:01 2005
------------------------
0.7.8: * Added Iftikhar's interface to Cremona's C++ allisog
       * L-ratio bugfix (when input elliptic curve has denominators)
       * changed printing of 0 in elliptic curve to "0"
       * better latex printing of subscripts 


Tue Oct  4 23:20:23 2005
------------------------
0.7.8: * Added computation of p-adic heights of points 
         on elliptic curves over Q; This functionality requires
         that MAGMA be installed to work.  (This is partially
         a test of using expect to access nontrivial functionality
         provided by scripts I wrote for a commercial system.)

Tue Oct  4 05:03:36 2005
------------------------
0.7.7: * Improved efficiency of use of pexpect (by increasing
         maxread buffering parameter).  
       * Made it so user scripts can be included in 
         data/scripts/sys/user, where sys is one of gp, magma, 
         singular, and gap.  Also have other subdirectories
         for scripts supported by SAGE.
       * Included some of Cremona's GP scripts
         in data/scripts/gp/cremona for computing
         analytic rank, finding isogenous curves over Q, and
         group structure of elliptic curves modulo p.
       * Included SEA point-counting GP script with SAGE. 
       * Made GF(p).gen() be 1.
       * Added new SAGE shell commands: 
             gp, gap, singular, magma
         that execute commands in one of those four systems via
         a pseudo terminal.  (NOTE: Only gp is included with SAGE.)

Sun Oct  2 20:55:31 2005
------------------------
0.7.6: * Moved __ arithmetic operations to base element class,
         so derived classes only have to defined _add, _sub, etc.
         on operands with the same parent. 
       * Removed ZEN from SAGE; benchmarks show NTL to be 
         significantly faster for polynomial arithmetic over GF(p).
       * Implemented polynomials over GF(p) using NTL
         (Use PARI for factorization still, since NTL is slow
          for factorization over GF(p).)


Sat Oct  1 01:06:29 2005
------------------------
0.7.6: Removed gmpy from SAGE (no longer used).


Fri Sep 30 23:33:03 2005
------------------------
0.7.6: Added source and building of ZEN-3-0r7 to SAGE 
       source distribution.   (This addes 2-3 minutes
       to the total build time.)


Thu Sep 29 04:39:17 2005
------------------------
0.7.5: (David Kohel) Added free algebras, quotients of free algebras,
       and quaternion algebras.    Construction and basic arithmetic
       is now supported but not much more yet. 


Thu Sep 29 03:14:15 2005
------------------------
0.7.5: (David Kohel) Added monoids -- FreeMonoid and FreeAbelianMonoid


Thu Sep 29 00:35:10 2005
------------------------
0.7.5: fraction field __call__; latex printing of multivariate polys

Tue Sep 27 17:25:48 2005
------------------------
0.7.5: fixed sqrt; improved parameter choices for mwrank;
       modified gens to only compute analytic rank if 
       conductor is small.

Mon Sep 26 02:55:05 2005
------------------------
0.7.4: (David Kohel) Multivariate poly __call__

Mon Sep 26 01:07:49 2005
------------------------
0.7.4: Upgraded to mwrank version "2005-09-25".


Mon Sep 26 01:02:56 2005
------------------------
0.7.4: Added building of MPC (GMP complexes) to SAGE distro.  No 
       nontrivial interface to it though.

Sun Sep 25 22:54:42 2005
------------------------
0.7.4: Fixed the preparser so it doesn't munge comments in
user-defined functions when loading files. 


Sun Sep 25 20:57:27 2005
------------------------
0.7.3: Factored out generic "Hecke modules" functionality.  This was
       a *massive* restructuring of the modular symbols code, and 
       separation of code that is specific to modular symbols from
       code that is completely general. 

0.7.3: Added categories, homspaces, functors, morphisms, etc.  Every
       object lies in a category: type "category(x)" or, in most
       cases, "x.category()" for the category of x.  If C is a
       category and x is an object, C(x) tries to make an object in C
       from x (much support is not done yet).  Morphisms, Hom spaces,
       are also in categories.
       

Fri Sep 23 08:16:26 2005
------------------------
0.7.3: Fixes to the tutorial (since so much of SAGE has changed)


Fri Sep 23 07:07:23 2005
------------------------
0.7.3: upgraded to Python2.4.2c1 (a bigfix candidate for python)


Thu Sep 22 20:27:29 2005
------------------------
0.7.3: 0.7.2 broke "n*P" for P a point on an elliptic curve; fixed by
making points derive from ModuleElement.

Thu Sep 22 05:53:39 2005
------------------------
0.7.2: Complete rewrite of the implicit coercion system.  Now it is
commutative and unambiguous, hence much more rigorous.  If an
arithmetic operation can be interpreted in two ways by SAGE (via
_coerce_ methods), then a TypeError is raised.  Making this change was
easy, but making the rest of SAGE work afterward wasn't, since it
required modifying lots of little bits of code throughout the SAGE
system that relied on the old behavior (left to right coercion).


Thu Sep 22 02:40:33 2005
------------------------
0.7.2: Fixed it so sage path is correct after startup (this is only a
problem when one uses "make install").


Wed Sep 21 06:51:28 2005
------------------------
Work on the Reference Manual.


Wed Sep 21 05:17:17 2005
------------------------
0.7.0: Finished implementation of free modules (first version) and
matrices over general rings.  Renamed tables directory to database.


Tue Sep 20 05:46:51 2005
------------------------
Made a factorization classes, so factorizations of 
polynomials and integers looks nicer.  Lots of work
on rings.


Mon Sep 19 20:13:53 2005
------------------------
Upgraded to PARI CVS 09-19-2005.

Mon Sep 19 16:21:00 2005
------------------------
Greatly reorganized matrices over general rings.


Mon Sep 19 16:20:14 2005
------------------------
Improved latex display.  Added a "view" command to display
a typeset version of any SAGE object using xdvi and latex.
(Of course not all necessary support for this command is
implemented, so it may or may not work for a particular object.)


Mon Sep 19 06:26:38 2005
------------------------
v0.6.5: Added the "alarm" command to SAGE:
    alarm(seconds): Raise a KeyboardInterrupt exception in a given
    number of seconds, which is useful for automatically interrupting
    long computations, and can be trapped using exception handling.

Sun Sep 18 20:31:59 2005
------------------------
v0.6.5: factoring out lots of code from vector_space and putting
it in free_module.  Created a "matrix" directory.  Eliminated
the "linalg" directory and vector* files, since they are part
of modules/free_module*. 


Sun Sep 18 17:29:48 2005
------------------------
v0.6.5: 
Changed many constructors to be factory functions instead
of __new__ in the abstract base class.   This is much more
flexible and robust.

------------------------
v0.6.5:
Massive reorganization of rings. 
 * Changed sage.rings.rings to sage.rings.all, which meant making
   changes all over.
 * Split polynomial quotient rings into two files
 * Switched to using a unified system for naming generators
   of rings, which meant changing how generators are named
   in all code. 
 * Made rings conform to the class hierarchy for rings. 

Sun Sep 18 05:25:23 2005
------------------------
v0.6.5:
 * Added very basic infra-structure for schemes and algebraic geometry.
 * Bugfixes, e.g., [1,2,3][2^1]
 * Introduced new ring: FractionField of integral domain.


Sat Sep 17 20:36:44 2005
------------------------
v0.6.4: reorganized Generators and Rings in Pyrex.  


Sat Sep 17 14:28:49 2005
------------------------
Fixed segfaults which were caused by the PARI C-library changing the
GMP malloc funciton.  (More precisely: Comment out the call to
mp_set_memory_functions in pari_kernel_init in the file
src/kernel/gmp/mp.c).  I also switched SAGE's GMP to use Python's malloc
instead of the C malloc, by adding an line in sage/ext/_integer.pyx
to do this.

Sat Sep 17 13:18:36 2005
------------------------
New real numbers: Replaced use of Python reals and GMP's mpf with MPFR.

Sat Sep 17 03:15:54 2005
------------------------
v0.6.4: Upgraded to MPFR cvs version, as of 2005-09-17.


Fri Sep 16 20:14:54 2005
------------------------
v0.6.3: Added SAGE_PATH environment variable, so user code in 
personal directories can be easily imported.

Fri Sep 16 14:51:57 2005
------------------------
v0.6.3: Fixed bug in sage startup script that is distributed with binaries.
When the ROOT wasn't manually edited, and the SAGE script was run but
not in the path (i.e., with ./sage), then ROOT was set to the relative
path instead of the absolute path.  

Also fixed annoyance in creation of sage script when building from
source, then the ROOT path is blah/source/.., instead of just blah.


Thu Sep  8 18:07:54 2005
------------------------
v0.6.2: Included the new Cremona database of curves of conductor up to 100000.
The labeling format now uses Cremona's new format, i.e.,
"<number><*lower* case letter>[number]".

Thu Sep  8 18:01:19 2005
------------------------
Implemented "factorization" for modular symbols spaces, and also
q_expansion and system_of_eigenvalues for simple modular symbols
spaces.  (Not optimized yet! But provides interesting functionality.)

Thu Sep  8 15:42:50 2005
------------------------
Fixed pickling of SAGE rings, which was broken by putting the ring
abstract base class into Pyrex.

Thu Sep  8 11:42:50 2005
------------------------
Implemented a vastly more efficient level raising map directly
using MANIN symbols (this is a theoretical improvement over anything
I've implemented before for this). 


Wed Sep  7 03:24:33 2005
------------------------
Modular Symbols: Implemented degeneracy maps in general in both
directions and all that was needed for this, including conversion
between manin and modular symbols (via continued fractions, etc.)

Mon Sep  5 09:37:58 2005
------------------------
Upgraded SAGE (0.6.alpha3) to include new 
versions of ZODB and bzip2:
   * ZODB3.5 (instead of ZODB3.4)
   * bzip2-1.0.3 (instead of bzip2-1.0.2)


Fri Sep  2 23:07:09 2005
------------------------
Wrote lots of new modular symbols code. 

Fixed major bug in charpoly of matrix over Q (it was wrong in
some cases when there are denominators).

Many many small linear algebra and ring bugs found and fixes prompted
by automated testing of new modular symbols code (which is part of a
new automated testing framework that will be used to greatly increase
the robustness of SAGE).


Fri Sep  2 13:34:18 2005
------------------------
Fix bug in SAGE interpreter where typing e.g., VectorSpace(Q,2).1
gave an error instead of giving generator 1.

Wed Aug 31 19:21:44 2005
------------------------
Added preliminary "detexing" of interactive documentation
accessed via "object?". 


Wed Aug 31 17:39:04 2005
------------------------
Lots more documentation for reference manual.  Added change_ring
to vector_spaces.


Tue Aug 30 22:22:49 2005
------------------------
Added complete class for computing with quotients of univariet
polynomial rings in general.  E.g., 
    sage: R = PolynomialRing(RationalField(), 'x'); x = R.gen()
    sage: S = R.quotient(x^3-2, 'a'); a = S.gen()
create R[x]/(x^3-2) as a quotient polynomial ring.

Tue Aug 30 17:55:37 2005
------------------------
Changed vectors so they print with commas between entries,
since otherwise vectors with entries in, e.g., number fields,
are unreadable (like in MAGMA). 


Tue Aug 30 01:15:32 2005
------------------------
Lots on modular symbols!


Mon Aug 29 01:33:25 2005
------------------------
Fixed bug where SAGE would fail to start if, e.g., a file
named "code.py" was defined in the directory where you 
started SAGE.  (Fix: Change directory then change back.)


Sat Aug 27 18:37:23 2005
------------------------
Lots of work on the SAGE reference manual. 


Wed Aug 24 00:22:54 2005
------------------------
Implemented power series and laurent series.


Thu Aug 18 23:58:51 2005
------------------------
Lots of additions to the PARI module (by Justin Walker and William
Stein).


Thu Aug 18 13:19:52 2005
------------------------
Added a build and rebuild command, and link to sage-src so that users
who install SAGE from source can easily modify and compile SAGE to
their liking.


Tue Aug 16 23:22:04 2005
------------------------
Lots of minor changes to various build scripts to get SAGE to build on
OS X.  Slightly modified sage/libs/interrupt.h to support OSX signals.


Fri Aug 12 17:07:15 2005
------------------------
Moved the Ring base class into Pyrex.   Added the mpfr C-library to the
distribution.  Created a first very rudimentary interface to mpfr.


Sun Aug  7 16:47:48 2005
------------------------
Modified sage/libs/interrupt.h to allow for compilation on FreeBSD.


Sun Aug  7 00:41:05 2005
------------------------
Finally made a useable windows version of SAGE!  
Added incomplete Gamma at complex arguments via the
PARI C library.   This removes use of mathematica.


Wed Aug  3 23:30:33 2005
------------------------
Upgraded to PARI 2005-08-03 version.  Upgrade to mwrank-2005-08-01.


Wed Aug  3 23:05:38 2005
------------------------
Fixed bug in L(E,s) (the precision defaulted to 0, which PARI
didn't like).


Sun Jul 31 11:23:32 2005
------------------------
Slightly modified pexpect.py so doctests that involve pexpect will
work.


Sun Jul 31 10:37:09 2005
------------------------
Changed MPolynomialRing base class to a "factory function".  This
is a lot simpler.


Mon Jul 25 22:18:14 2005
------------------------
Complete rewrite from scratch of PARI library interface.  Now PARI is
in sage.libs._pari like the other libraries.  I made many improvements
to the wrapping so it should be faster.  I also wrote excellent
_sig_on, _sig_off  macros for signal handling.

Added galois data to PARI distro, so can compute Galois groups of
fields up to degree 11.


Sun Jul 24 11:28:36 2005
------------------------
Made it so polynomials over Z use the NTL wrapper.  Now arithmetic
with them in SAGE is very fast.


Sun Jul 24 10:58:15 2005
------------------------
Added complete wrapper of NTL's very fast Z[x] polynomial class.
(This is the class sage.libs.ntl.ZZX.)


Thu Jul 21 02:29:54 2005
------------------------
Upgraded to current PARI cvs version.  

Wed Jul 20 11:53:01 2005
------------------------
New mwrank version that uses PARI C-library for factoring


Wed Jul 20 11:21:02 2005
------------------------
Fixed bug in CremonaDatabase, where it reported
the wrong number of isogeny classes.


Jul 19 00:51:40 2005
------------------------
Split up ellcurve implementation into separate files.  Added mwrank
conductor computation.  Added Mark Watkin's EC program, which
computes, e.g., the modular degree.



Sat Jul 16 23:11:20 2005
------------------------
Many many small changes to the build system and some source files
in order to get SAGE 0.4.beta3 to build on a wide range of systems.

I also added sage/misc/functional.py and moved a bunch of code
from sage/all.py in there, and documented it.  I also documented
sage/misc/misc.py.


Thu Jul 14 18:07:34 2005
------------------------
Fixed bug in rational.pyx (Q(7)^(-1) was getting confused because
of signed / unsigned ints.)

Eliminated all usage of SWIG.  Now C++ libraries are wrapped using
Pyrex.


Sun Jul 10 02:55:25 2005
------------------------
Figured out how to use sigsetjmp, etc., so that ctrl-c breaks out of
long-running C/Pyrex - level compiled code.  This will make it much
easier to immediately quit out of computations using "Ctrl-C".  (This
does not yet apply to C++ libraries.)


Sat Jul  9 20:06:47 2005
------------------------

I investigated the bug in which "s=str(2^100000000)" terminated SAGE.
It turns out there seems to be a bug in the string representation
function in GMP, so it only works on numbers with up to about 4
million digits in bases other than a power of 2.  I've added proper
checking for this condition along with a helpful error message.  Maybe
it's not so much a bug as GMP doesn't have a good way of informing me
when it runs out of memory, and really what is happening is an out of
memory condition.  


Sat Jul  9 09:22:50 2005
------------------------
Made many many small changes to SAGE and some of its dependencies so
that SAGE now compiles with GCC 4.0.x.  SAGE should continue to
compile with GCC 3.x.


Sat Jul  9 02:49:10 2005
------------------------
Fixed the bug in which existing from help system pager crashed SAGE.
(Added signal.signal(signal.SIGPIPE, _my_empty_sigint) to py_pari.pyx)

Implemented a "make install" that install to /usr/local (or any other
prefix).


Sat Jul  9 01:10:13 2005
------------------------
Added logging to the build-from-source process.  Now if you build from
source, all the output is recorded to the file install/install.log.  If
the build process fails, you can send me this file, which will be very
helpful in debugging. 


Sat Jul  9 00:25:46 2005
------------------------
Fixed this bug:
 sage: e=EllipticCurve('37A')
 No handlers could be found for logger "ZODB.FileStorage"


Fri Jul  8 09:48:57 2005
------------------------
Created a sensible system for creating new version numbers of SAGE.
Now on my local system I just have to change the SAGE_VERSION
environment variable.

Unified the documentation system.  Got rid of the autogenerated API
docs, and made the Manual contain similar information, but in a much
more usable form.

Added allowing of pasting leading >>>'s into SAGE.  It said in
the manual that this was allowed, but it wasn't.

Simplified and rewrote the installation guide. 
Updated the tutorial a little (not much) -- added that ?foo? in
SAGE gives the source code for a function (a *great* feature
of IPython -- but need to extend to also handle pyrex code...?!)


Thu Jul  7 14:30:49 2005
------------------------
Added *lots* of new documentation in the Manual.


Sun Jul  3 03:22:29 2005
------------------------
Wrote multivariate-polynomial class over arbitrary bases with bost a
list and dict representation.


Sat Jul  2 21:12:05 2005
------------------------
Refactored finite fields class so prime fields are implemented
separately from extension of prime fields.  Also added an issquare
function (via PARI) to IntegerMod, FiniteField and Integer rings.
Modified PARI issquare so works in more generality (optional to return
a square root).


Sat Jul  2 18:50:26 2005
------------------------
Improved doctest script so it only tests modified files.
(This affects development only.)


Sat Jul  2 18:29:48 2005
------------------------
Added several new databases to SAGE and unified old ones.  Now
everything uses the bzip2 compressed ZODB.  I also fixed doctesting so
that the databases can be tested, at least on my local install.


Sat Jul  2 16:04:33 2005
------------------------
Upgrade SAGE distribution to include ZODB 3.4.0 (where ZODB is the
Zope Object Database).  

Sat Jul  2 15:52:29 2005
------------------------

* Rewrote the Cremona elliptic curves database from scratch, still using
ZODB so that it is very fast. Now the database is simpler, cleaner,
and easier to use and understand.  Also, it now can be automatically
built from cremona's ftpdata.tgz file.  I also added all Cremona's
data up to level 70000.  Note that now the database is 36MB.  There
was some data in the old elliptic_curves database that wasn't in
Cremona's (e.g., individual Tamagawa numbers), and now that is not in
the new database, which will always be kept the same as Cremona's.

* Added a table of Conway polynomials (for finite fields).


Fri Jul  1 08:48:51 2005
------------------------
Improved doctests so they are more flexible and work on all files.
Now docstrings can use "sage:" instead of ">>>" as the prompt.

Fri Jul  1 08:47:31 2005
------------------------
New modular symbols code and making old code work.  In particular, I
implemented degeneracy_maps, new_subspace, and cuspidal_subspace (in
some cases).


Mon Jun 27 13:34:44 2005
------------------------
Added to modular symbols code.


Thu Jun 23 18:00:55 2005
------------------------
Improvements to py_pari.  (Defined more functions and added
documentation.)
Starting to develop multivariate polynomials with David Joyner.


Thu Jun 16 07:46:25 2005
------------------------
Changed behavior of integer square root to raise an error if the
integer is not a perfect square.  Added the isqrt member function of
Integer to return the floor of the square root.


Fri Jun  3 07:21:23 2005
------------------------
Fixed mistake in sage.rings.arith.prev_prime documentation.


Thu Jun  2 23:43:21 2005
------------------------

* Fixed a bug in rings.arith.is_square, where it gave wrong results
  when the input is a rational number. 

* Fixed a bug in the sage binary startup script, where it removed the
  old path, which caused rm and other commands to fail, which I think
  are used by ZODB.


Mon May 16 11:37:40 2005
------------------------

Added mwrank, ntl, SWIG to install tarball.  More exposing of
functionality of mwrank and functions on elliptic curves related
to Heegner points.


Sat May  7 10:21:49 2005
------------------------
Now SAGE includes the html documentation in the release.  After
installing with "make install" it's in a subdirectory called "doc".
I've also created a binary installer, which is easy to move around
after install.


Wed May  4 17:15:07 2005
------------------------

Switched back to PARI 2.2.10-alpha after learning of bad bugs in
previous versions, and after *fixing* the bug in root number
calculations.


Sun May  1 19:12:37 2005
------------------------
Refactored elliptic curves class.  Now there's a generic base
class and a derived class with special functionality for curves
over Q. 


Sat Apr 30 16:49:36 2005
------------------------
Changed matrix printing to include a space before the
matrix.  This makes lists of matrices print correctly.

Sat Apr 30 16:28:20 2005
------------------------
Some finite field and linear algebra optimizations.  Finished
writing "coordinates" for vector subspaces with basis. 


Thu Apr 28 21:48:55 2005
------------------------

Added "PariRing", which is a standard SAGE ring with SAGE elements,
which wraps arbitrary PARI objects.  Thus, e.g., 
>>> M = MatrixSpace(PariRing(),2)
>>> a = M([2,'3+w', 'y', 10])
>>> a

[    2 w + 3]
[    y    10]
>>> a^(-1)
[      10/((-w - 3)*y + 20) (-w - 3)/((-w - 3)*y + 20)]
[      -y/((-w - 3)*y + 20)        2/((-w - 3)*y + 20)]



Wed Apr 27 03:41:36 2005
------------------------
Added lots of BSD related things to ellcurve.py.

Added a new interval arithmetic class under sage.rings.  The interval
arithmetic ring is named IntervalRing().  This is useful in
computations related to the BSD conjecture.

After "upgrading" to PARI 2.2.10-alpha, which fixed some annoying bugs
in PARI2.2.9-alpha, I discovered that 2.2.10-alpha is also too bugy.
For example, it computes the Lseries at 1 and sign of functional
equation for the curve defined by [0,1,0,-6,4] incorrectly.  So, I
switched to PARI 2.2.7-alpha, which has none of the bugs I've
discoved, and for some reason seems to be the last "stable" 2.2.x
release.  Even the documentation is messed up in 2.2.n for n > 7,
i.e., the C-library sections are missing. But in 2.2.7-alpha they're
there.   

Added David Kohel's function for computing division polynomials
of elliptic curves.


Sun Apr 24 09:33:03 2005
------------------------
Improved prime iteration and enumeration in sage/rings/arith.py
by incorporating the function from 
   http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/366178
and polishing some releated code.  

Sat Apr 23 15:21:24 2005
------------------------
Added termcap to the SAGE distro.  This is so readline will work
right with Python on SUSE and certain other distributions.   I tried
using ncurses, but it didn't improve matters at all, and uses a lot
more space and takes longer to compile. 
(Even with ncurses or termcap, Ipython gets some formatting
wrong on SUSE.)


Fri Apr 22 18:28:25 2005
------------------------
* Upgraded to PARI 2.2.10 and made sage work with new version.
This fixes a bug in conductor computation.

* Changed PARI to compile with GMP support. 

* Separated databases, so users can download just
the ones they need.

* Upgraded to new version of ZODB. (V 3.3.1)

* Improved Makefile (some things were confused, which led to
non-fatal errors).



Thu Apr 21 15:42:58 2005
------------------------
Switched to using bzip2 for most of the packages included with SAGE.
This saves 3 MB, so the distribution is 16MB instead of 19MB.  We
don't worry about whether bzip2 is installed on the target computer,
since we include bzip2 and build it from source as part of the SAGE
build process anyways (it's needed for compressed databases).

Changed the automatic update from the web command to:
    "make update-web"

Found serious bug in ellcurve conductor in PARI; added example to
automatic tests, so this bug will get fixed soon.




Thu Apr 21 15:29:56 2005
------------------------
Add many functions related to the BSD conjecture to the elliptic
curves package for computing with elliptic curves.  E.g., analytic
order of Sha, Kolyvagin and Kato bounds, L'(E,1), etc.

Made 4/2 be a rational number. 


Mon Apr 18 12:57:16 2005
------------------------
Bug fix for interpreter.py, where "5. + 2." would crash it.  
That is parsed correctly, and if the parser runs into a problem,
it just prints and error and executes the unparsed line. 


Sat Apr 16 23:29:44 2005
------------------------
Added general finite fields.  Improved the commmand-line preprocessor
further.


Fri Apr 15 06:52:56 2005
------------------------
Rewrote the command-line preprocessor so it changes all integer tokens
to actual ZZ objects, all numbers with decimals to RR's, correctly
parses ^'s, and allow for the <identifier>.num MAGMA notation.  This
likely breaks some thing, e.g., functions that expect an int as
input, suddenly now receive a ZZ.  To be fixed...


Thu Apr 14 05:24:31 2005
------------------------
Upgraded Python in sage distro to version 2.4.1.


Wed Apr 13 12:38:55 2005
------------------------

Worked on improving support for Windows.  Improved emacs
support.


Sun Apr 10 17:56:57 2005
------------------------
Wrote the tutorial with David Joyner.  


Sat Apr  9 11:44:42 2005
------------------------
Fixed printing of annoying log messages on start of sage by
removing log option.  The history is in ~/.ipython/history
anyways.


Fri Apr  8 02:13:39 2005
------------------------

Adding charpoly, trace, matrix, etc. to py_pari, and used them to add
a bunch of nontrivial linear algebra over number fields.  E.g.,
kernels, charpolys of matrices, etc.  In the long run multi-modular
methods are needed, but PARI's number field matrix algebra does work
reasonably, and will allow me to focus on developing modular symbols
code.


Thu Apr  7 15:59:18 2005
------------------------

Added factorization of polynomials over number fields. 
Fixed bug in charpolys of matrices over number fields.