wiki:WikiStart

Version 520 (modified by ltw, 22 months ago) (diff)

--

Table of Contents

  1. Special Wiki pages for certain topics
  2. Formatting hint for bug reports
  3. Browse Open Issues and Review Some Patches!
  4. Starting Points for Using Trac (this web site)
  5. Account Names Mapped to Real Names

Welcome to the Sage Development Organization Page

To get an account, read the trac guidelines, then do either of the following:

  1.  Click here to request an account. You need to request to join the Google group  sage-trac-account in order for a manager to setup your account. Adding your full name, your preferred username, and your preferred contact email address speeds up the request.
  2. Email  Minh Van Nguyen directly with your full name, your preferred username, and your preferred contact email address.

Make sure you understand the review process, and the procedures for opening and closing tickets. See the Developer's Guide for more information.

View Ticket Lists -  View Tickets you've participated in

BLOCKERS:  List of blockers for the next release

 Edit this wiki page if you are working on a documentation/doctest ticket.

Sage is free and open software that supports research and teaching in algebra, geometry, number theory, cryptography, etc. Both the Sage development model and the technology in Sage itself are distinguished by an extremely strong emphasis on openness, community, cooperation, and collaboration: we are building the car, not reinventing the wheel.

This web page lists both bugs in Sage and ideas for features to add to Sage. Please help Sage development by posting extensive information about all bugs you know of or find in Sage here, no matter how trivial.

Special Wiki pages for certain topics

This is a list of special places where types of tickets are grouped together for convenience

Formatting hint for bug reports

Please use the {{{ and }}} tags to add code snippets and Sage session transcripts. For example: 

{{{
sage: 1 + 2
3
}}}

displays as 

sage: 1 + 2
3

You can enable syntax highlighting in these code snippets by using a hashbang (#!) followed by the name of the syntax; for example, 

{{{
#!python
def spam ():
    eggs = 3
    return 1
pine_for_fjords()
}}}

displays as 

def spam ():
    eggs = 3
    return 1
pine_for_fjords()

This also makes inline diff viewers if you choose the syntax name diff: 

{{{
#!diff
# HG changeset patch
# Date 1300721936 0
foo

diff --git a/bar b/bar
--- a/bar
+++ b/bar
@@ -1,2 +1,3 @@
 baz
 quux
+xyzzy
}}}

displays as

  • bar 

    # HG changeset patch
# Date 1300721936 0
foo

diff --git a/bar b/bar
    a b  
    11baz 
    22quux 
     3xyzzy 

You can also use backticks (`) to demarcate inline code snippets, etc. This is useful around names like DiGraph to avoid an automatic wikilink (DiGraph?), like so: `DiGraph`. This can also be done for non-code names like MoinMoin (the name of the software behind the  sage wiki) by prepending an exclamation mark: !MoinMoin.

Browse Open Issues and Review Some Patches!

Use various reports located at  http://trac.sagemath.org/sage_trac/report to browse open tickets. Of particular note, reviewing tickets should be a high priority, because these tickets are typically almost ready to close with little effort. This is accessible from any page in Trac, by the "View Tickets" button.

If you are logged in, one particularly useful report is  this one, which gives all open tickets you've somehow participated in.

Here are  the public bug reports from the notebook interface.

Starting Points for Using Trac (this web site)

Account Names Mapped to Real Names

Below is a list of about 300 of the roughly 510 account holders in Sage's trac. Feel free to add yourself here if you are still missing. Please sort alphabetically by username!

  1.  a.serrano - Alejandro Serrano (trupill at gmail dot com)
  2.  abergeron - Arnaud Bergeron
  3.  abmasse - Alexandre Blondin Massé (LaCIM, Université du Québec à Montréal, Canada)
  4.  aclaesson - Anders Claesson (Reykjavik University)
  5.  acleone - Alex Leone (UW)
  6.  adavid - Anthony David
  7.  aginiewicz - Andrzej Giniewicz
  8.  ahupfer - Alexander Hupfer
  9.  ajeeshr - Ajeesh Ravindran (Govt. Engg. College, Sreekrishnapuram, Palakkad, India)
  10.  AJonsson - Anders Jonsson (Umeå University, Sweden)
  11.  AlexGhitza -  Alex Ghitza (University of Melbourne, Australia)
  12.  aliashamieh - Alia Hamieh
  13.  alubovsky - Arthur Lubovsky
  14.  aly.deines - Aly Deines
  15.  amca01 -  Alasdair McAndrew (Australia)
  16.  amhou - Andrew Hou (UW Undergrad)
  17.  amusselman -  Andrew Musselman (Rhapsody at Real Networks)
  18.  amyglen -  Amy Glen (Reykjavík University, Iceland)
  19.  andrew.mathas -  Andrew Mathas (University of Sydney, Australia)
  20.  annahaensch -  Anna Haensch (Wesleyan University)
  21.  araichev -  Alex Raichev (University of Auckland, New Zealand)
  22.  arminstraub -  Armin Straub (Tulane University, New Orleans)
  23.  asbuch -  Anders S. Buch (Rutgers)
  24.  aschilling -  Anne Schilling (UC Davis)
  25.  awebb - Adam Webb (Canadian Light Source, Saskatoon, Canada)
  26.  bantieau - Benjamin Antieau (UIC)
  27.  bedwards - Ben Edwards (bedwards at cs dot unm dot edu)
  28.  benjaminfjones -  Benjamin Jones (University of Wisconsin-Stout)
  29.  bensmith - Ben Smith (smith at lix.polytechnique.fr)
  30.  bisson -  Gaetan Bisson
  31.  bochmann -  Olaf Bochmann (Complex Systems Lab)
  32.  boothby - Tom Boothby
  33.  boussica - Adrien Boussicault
  34.  brett -  Brett Stevens (Carleton University, Ottawa, Canada)
  35.  broune -  Bjarke Hammersholt Roune
  36.  bsutton - Blair Sutton (London, UK)
  37.  bump - Daniel Bump (Stanford)
  38.  burcin - Burcin Erocal
  39.  bwonderly - William Wonderly (University of Puget Sound)
  40.  carolinbe -  Carolina Benedetti
  41.  carlohamalainen -  Carlo Hamalainen
  42.  certik -  Ondřej Čertík
  43.  CharlsMathew - [Govt. Engineering College Palakkad, Kerala, India]
  44.  chrisjamesberg -  Chris Berg (York University, Fields institute, Toronto, Canada)
  45.  colah -  Christopher Olah
  46.  cpernet -  Clément Pernet
  47.  craigcitro - Craig Citro
  48.  cremona - John Cremona (University of Warwick, UK)
  49.  cschwan -  Christopher Schwan (Theoretical High Energy Physics (THEP) at Universität Mainz)
  50.  cswiercz - Chris Swierczewski (University of Washington)  Website
  51.  cturner - Charlie Turner (University of Warwick, UK)
  52.  cwitty - Carl Witty
  53.  dagss -  Dag Sverre Seljebotn
  54.  damek -  Damek Davis (UCLA)
  55.  DanaErnst -  Dana Ernst (Plymouth State University)
  56.  dangrayson -  Daniel R. Grayson
  57.  daniel.disegni - Daniel Disegni  http://www.math.columbia.edu/~disegni
  58.  davidloeffler -  David Loeffler (University of Warwick, UK)
  59.  ddrake -  Dan Drake (KAIST, Korea)
  60.  defeo -  Luca De Feo (Université de Rennes 1, France)
  61.  dfdeshom - Didier Deshommes
  62.  dgordon -  Dan Gordon (IDA Center for Communications Research, USA)
  63.  dimpase -  Dmitrii Pasechnik (NTU, Singapore)
  64.  djao -  David Jao (University of Waterloo, Canada)
  65.  dmhansen -  David Møller Hansen (DTU, Denmark)
  66.  dmharvey - David Harvey (New York University, USA)
  67.  dperkinson -  David Perkinson (Reed College, USA)
  68.  dpoetzsch - David Poetzsch-Heffter (Saarland University, Germany)
  69.  dpruessner - Daniel Pruessner (Fairchild Semiconductor, USA, TX)
  70.  drkirkby - David Kirkby
  71.  dsm - Douglas McNeil
  72.  dunfield -  Nathan Dunfield (University of Illinois, USA)
  73.  ebeyerstedt -  Erin Beyerstedt (Tulane University)
  74.  ecurry -  Eva Curry (Acadia University, Canada)
  75.  edward.scheinerman -  Ed Scheinerman (Johns Hopkins University, USA)
  76.  ekirkman - Emily Kirkman
  77.  evanandel - Ethan Van Andel (Calvin College, USA)
  78.  eviatarbach - Eviatar Bach
  79.  fbissey - François Bissey (University of Canterbury, New Zealand)
  80.  fccoelho - Flávio Codeço Coelho (Instituto Gulbenkian de Ciência)
  81.  fdiebold - Florian Diebold
  82.  fidelbarrera - Fidel Barrera-Cruz (University of Waterloo, Ontario, Canada)
  83.  flawrence - Felix Lawrence (University of Sydney, Australia)
  84.  fredrik.johansson - Fredrik Johansson
  85.  fstan - Flavia Stan (RISC, Johannes Kepler University Linz)
  86.  fwclarke -  Francis Clarke (Swansea University, Wales, UK)
  87.  gagansekhon - Gagan Sekhon
  88.  gagern - Martin von Gagern (TU München, Germany)
  89.  gbe -  Geoffrey Ehrman (University of New Hampshire)
  90.  GeorgSWeber - Georg S. Weber (Nürnberg, Germany)
  91.  gerbicz - Robert Gerbicz (ELTE, Hungary)
  92.  gerrob - Robert Gerbicz (ELTE, Hungary)
  93.  ggrafendorfer - Georg Grafendorfer (ETH Zürich, Switzerland)
  94.  ghtdak -  Glenn Tarbox (Seattle, WA)
  95.  giraudo - Samuele Giraudo (université de Marne-la-Vallée Paris-Est)
  96.  gmhossain -  Golam Mortuza Hossain (UNB, Canada)
  97.  gmoroz - Guillaume Moroz
  98.  goodok.alex - Alexey U. Gudchenko (Moscow, Russia)
  99.  gutow-  Jonathan Gutow (Univ. Wisc. Oshkosh)
  100.  gsmcwhirter -  Gregory McWhirter (UC Irvine)
  101.  hartke - Stephen Hartke (University of Nebraska-Lincoln)
  102.  hedtke -  Ivo Hedtke (Martin-Luther-University Halle-Wittenberg, Germany)
  103.  hemmecke - Ralf Hemmecke (RISC, Johannes Kepler University Linz)
  104.  hgranath - Håkan Granath (Karlstad University, Sweden)
  105.  hivert - Florent Hivert (Université de Rouen, France)
  106.  hlaw - Hamish Ivey-Law (Université de la Méditerranée, France; University of Sydney, Australia)
  107.  hthomas - Hugh Thomas (University of New Brunswick, Canada)
  108.  iandrus - Ivan Andrus
  109.  itolkov - Igor Tolkov (University of Washington, Seattle)
  110.  jason -  Jason Grout (Drake University)
  111.  jasonbhill -  Jason B. Hill (University of Colorado)
  112.  jbandlow - Jason Bandlow (University of Pennsylvania, Philadelphia)
  113.  jblakeslee - Jeffrey Blakeslee
  114.  JCooley - Jenny Cooley (University of Warwick, UK)
  115.  jdc -  Dan Christensen (University of Western Ontario, London, Ontario)
  116.  jdemeyer -  Jeroen Demeyer (Ghent University, Belgium)
  117.  jeff.kantor - Jeff Kantor (University of Notre Dame)
  118.  jen - Jennifer Balakrishnan (MIT)
  119.  jeremywest -  Jeremy West (University of Michigan)
  120.  jgaski - Joanna Gaski (University of Washington, Seattle)
  121.  jhpalmieri -  John Palmieri (University of Washington, Seattle)
  122.  jirving -  John Irving (Saint Mary's University, Halifax, Canada)
  123.  jjh -  Jonathan Hunt (University of Queensland, Australia)
  124.  jlefebvre - Jerome Lefebvre (University of British Columbia, Vancouver)
  125.  jleroy - Julien Leroy (Université de Picardie Jules Verne, France)
  126.  jlopez -  Javier López Peña (Queen Mary University of London, UK)
  127.  jmbr - Juan M. Bello Rivas (Universidad Politécnica de Madrid, Spain)  http://superadditive.com
  128.  jmichel -  Jean Michel (University Paris VII, France)
  129.  johanbosman -  Johan Bosman (University of Warwick, UK)
  130.  john_perry -  John Perry (University of Southern Mississippi, USA)
  131.  jonhanke - Jonathan Hanke (University of Georgia, Athens, GA)
  132.  joudinet -  Johan Oudinet (KIT, Karlsruhe, Germany)
  133.  jpflori -  Jean-Pierre Flori (TELECOM ParisTech (ENST), Paris, France)
  134.  jplabbe - Jean-Philippe Labbé (BMS-Freie Universitat, Berlin, Germany)
  135.  jrasch -  Jens Rasch
  136.  jrp - James Pfeiffer
  137.  jsp -  Jaap Spies
  138.  jsrn - Johan Sebastian Rosenkilde Nielsen (Technical University of Denmark)
  139.  jstjohn -  John St. John (University of California Santa Cruz, Santa Cruz, CA)
  140.  jsyri - Joni Syri
  141.  jthurber - John Thurber (Eastern Oregon University)
  142.  justin - Justin Walker (Stanford University, Palo Alto, CA)
  143.  jvkersch -  Joris Vankerschaver (University of California at San Diego, San Diego, CA)
  144.  jvoight - John Voight (University of Vermont, Burlington, VT)
  145.  jwmerrill - Jason Merrill (Yale University, New Haven CT)
  146.  katestange -  Katherine Stange (Simon Fraser University / Pacific Institute for the Mathematical Sciences at University of British Columbia, Vancouver, BC)
  147.  kbaker - Kirby Baker (Univ. of California, Los Angeles, CA)
  148.  kcrisman -  Karl-Dieter Crisman (Gordon College, Wenham MA)
  149.  kedlaya -  Kiran Kedlaya (MIT, Cambridge MA)
  150.  kevin.stueve - Kevin Stueve (University of Washington, Seattle)
  151.  khorton - Kevin Horton (Ottawa, Canada)
  152.  kimi - Kiminori Tsukazaki (University of Warwick)
  153.  kini -  Keshav Kini (NTU, Singapore)
  154.  kkilger -  Kilian Kilger (University of Heidelberg)
  155.  klee - Kwankyu Lee (Chosun University, Korea)
  156.  kmels - Carlos Lopez (Del Valle University, Guatemala)
  157.  koen -  Koen van de Sande (University of Amsterdam, Amsterdam)
  158.  kohel -  David Kohel (Institut de Mathematiques de Luminy, Marseille)
  159.  kthow - Kazuo Thow (University of Washington, Seattle, WA)
  160.  leif - Leif Leonhardy
  161.  lftabera - Luis Felipe Tabera Alonso (Universidad de Cantabria, Spain)
  162.  ljpk -  L. J. P. Kilford (University of Bristol)
  163.  logix - Harold Gutch (Max Planck Institute for Dynamics and Self-Organization, Göttingen, Germany)
  164.  lola - Lola Thompson (Dartmouth College, Hanover, NH)
  165.  Loufer - Luis F. Villegas, Minnesota (Just a SAGE aficionado)
  166.  lsampaio - Leonardo Sampaio
  167.  ltw - Kelvin Li (Undergraduate at UC Berkeley)
  168.  luebeck -  Frank Lübeck (RWTH Aachen)
  169.  mabshoff - Michael Abshoff (TU Dortmund)
  170.  malb - Martin Albrecht (Royal Holloway, University of London)
  171.  maldun - Stefan Reiterer (University of Graz, Austria)
  172.  mallet - Olivier Mallet (Université de Rouen, France)
  173.  mardaus - Michael Mardaus (University of Mainz, Germany)
  174.  mariah - Mariah Lenox
  175.  maxflander - Max Flander (University of Melbourne, Australia)
  176.  mderickx - Maarten Derickx (Universiteit Leiden, The Netherlands)
  177.  mguaypaq - Mathieu Guay-Paquet (University of Waterloo, Ontario)
  178.  mhampton -  Marshall Hampton (University of Minnesota, Duluth)
  179.  mhansen - Mike Hansen
  180.  minz -  Moritz Minzlaff (TU Berlin, Germany)
  181.  mjo -  Michael Orlitzky (Baltimore, MD)
  182.  mjordan7 - Mark Jordan (Undergraduate at University of Washington)
  183.  mkasperski -  Marcin Kasperski
  184.  mknkra -  Manu K. Mohan
  185.  mmarco -  Miguel Marco
  186.  mmasdeu -  Marc Masdeu (Columbia University, NY)
  187.  mmastnak -  Mitja Mastnak (Saint Mary's University, Halifax, Canada)
  188.  mmeulien -  Matthias Meulien
  189.  mmezzarobba -  Marc Mezzarobba (Ph.D. student, INRIA, France)
  190.  mora -  Peter Mora (Ph.D. student in Hungary)
  191.  Moredread - André-Patrick Bubel
  192.  mpatel - Mitesh Patel
  193.  mraum - Martin Raum (MPIM Bonn, Germany)
  194.  mrtrumbe - Matthew Trumbell
  195.  msoos -  Mate Soos
  196.  mstreng -  Marco Streng (University of Warwick, UK)
  197.  mtaranes - Maite Aranes (University of Warwick, UK)
  198.  mtphaovibul -  M.Tip Phaovibul (University of Illinois- Champaign-Urbana)
  199.  mvngu -  Minh Van Nguyen (Melbourne, Australia)
  200.  myurko - Michael Yurko
  201.  nborie - Nicolas Borie (Université Paris Sud XI, Orsay, France)
  202.  nbruin - Nils Bruin (Simon Fraser University, Canada)
  203.  ncohen -  Nathann Cohen (Université Nice Sophia-Antipolis, France)
  204.  ncryan -  Nathan C. Ryan (Bucknell University, Pennsylvania, USA)
  205.  nharris -  Neal Harris (University of California, San Diego, USA)
  206.  Niels -  Niels Duif (Netherlands)
  207.  niles -  Niles Johnson (University of Georgia, USA)
  208.  NilsSkoruppa - Nils Skoruppa (Universität Siegen, Germany)  http://www.countnumber.de
  209.  novoselt - Andrey Novoseltsev (University of Alberta, Edmonton)
  210.  nthiery - Nicolas M. Thiéry (Université Paris Sud XI, Orsay, France)
  211.  olazo - Oscar Gerardo Lazo Arjona (Universidad Autónoma de Yucatán, Yucatán, México)
  212.  pabryan -  Paul Bryan (Australian National University, ACT, Australia)
  213.  pang -  Pablo Angulo (UAM, Madrid, Spain)
  214.  pbruin -  Peter Bruin (Université Paris-Sud 11, Orsay, France)
  215.  pbutler - Paul Butler (University of Waterloo, Ontario)
  216.  pcpa - Paulo César Pereira de Andrade (Mandriva Linux, Curitiba, Brazil)
  217.  pdehaye - Paul-Olivier Dehaye (ETH Zurich, Switzerland)
  218.  pdenapo - Pablo De Nápoli- (Universidad de Buenos Aires, Argentina)
  219.  phil - Philipp Schneider (Universität Erlangen-Nürnberg)
  220.  pjeremy - Peter Jeremy
  221.  pipedream - Jan Groenewald  African Institute for Mathematical Sciences
  222.  pmcnamara -  Peter McNamara (Bucknell University, Pennsylvania, USA)
  223.  pong -  Wai Yan Pong (CSU Dominguez-Hills)
  224.  psaade - Philippe Saadé (Lyon, France)
  225.  psinis - Phaedon Sinis (San Francisco, CA)
  226.  QuantumKing - Eric Webster
  227.  quimey - Quimey Vivas (Universidad de Buenos Aires, Argentina)
  228.  rbeezer -  Rob Beezer (Univ of Puget Sound, Tacoma, WA, USA)
  229.  rbk -  Richard B. Kreckel
  230.  rdingman - Ryan Dingman (University of Washington)
  231.  rhinton - Ryan Hinton (University of Virginia)
  232.  rishi - Rishikesh
  233.  rkirov - Radoslav Kirov
  234.  rlindner -  Richard Lindner (Technische Universität Darmstadt, Germany)
  235.  rlm -  Robert Miller (MSRI, Berkeley, CA)
  236.  rmartinjak - Robin Martinjak
  237.  robert.marik -  Robert Mařík (Mendel University in Brno, Brno, Czech Republic), supported by the grant  131/2010 FRVS
  238.  robert_goss - Robert Goss (University of Warwick, UK)
  239.  robertwb -  Robert Bradshaw (University of Washington, Seattle)
  240.  roed -  David Roe (Harvard University, Cambridge)
  241.  rohana - R. Andrew Ohana (University of Washington, Seattle)
  242.  ronanpaixao - Ronan Paixão (Brazil)
  243.  rossk - Ross Kyprianou (University of Melbourne, Australia)
  244.  rschwarz - Robert Schwarz (Heidelberg, Germany)
  245.  ryan - Ryan Grout (Provo, UT)
  246.  saliola -  Franco Saliola (Université de Marne-la-Vallée)
  247.  samhop - Sam Hopkins (University of Washington, Seattle)
  248.  sault - Shaun Ault (Fordham)
  249.  sbarthelemy - Sébastien Barthélemy (upmc, Paris)
  250.  sbulygin -  Stanislav Bulygin (University of Kaiserslautern)
  251.  scbou - Samuel Boucher (Université du Québec à Montréal, Canada)
  252.  schilly -  Harald Schilly (University of Vienna, Austria)
  253.  schymans -  Stan Schymanski (Max Planck Institute for Biogeochemistry)
  254.  simon - Simon Morris
  255.  SimonKing -  Simon King (Friedrich-Schiller-Universität, Germany)
  256.  sjanke - Scott Janke
  257.  slabbe -  Sébastien Labbé (LaCIM, Université du Québec à Montréal, Canada)
  258.  slelievre -  Samuel Lelièvre (Laboratoire de mathématique d'Orsay, Université Paris-Sud 11, France)
  259.  slewis -  Stephen Lewis (University of Washington, Seattle)
  260.  slosoi - Sami Losoi (Espoo, Finland)
  261.  Snark - Julien Puydt (France)
  262.  spancratz - Sebastian Pancratz (Oxford University)
  263.  spice - Simon Spicer (University of Washington, Seattle)
  264.  stankewicz - Jim Stankewicz (University of Georgia, USA)
  265.  stumpc5 -  Christian Stump (LaCIM, Université du Québec à Montréal, Canada)
  266.  swinarsk - David Swinarski (University of Georgia, USA)
  267.  syazdani - Soroosh Yazdani
  268.  syam.in - Syamkrishnan C K( India, Kerala)
  269.  tevinjoseph - Tevin Joseph K.O.(Govt. Engg. College, Sreekrishnapuram, Palakkad, India)
  270.  thevenyp - Philippe Theveny (INRIA, France)
  271.  timdumol -  Tim Dumol (University of the Philippines, Diliman)
  272.  tdupu -  Taylor Dupuy (University of New Mexico)
  273.  tjlahey - Tim Lahey
  274.  tjolivet -  Timo Jolivet (LIAFA, Paris and University of Turku]
  275.  tkluck - Timo Kluck (Utrecht University, Netherlands)
  276.  tmonteil - Thierry Monteil  CNRS, University of Montpellier, France and  LMA ;)
  277.  tnagel - Tobias Nagel (University of Mainz, Germany)
  278.  tombuc - Tomasz Buchert
  279.  tomc - Tom Coates (Imperial College London)
  280.  tornaria -  Gonzalo Tornaría (Universidad de la República, Uruguay)
  281.  turnersr - S. R. Turner (University of Chicago)
  282.  tsutton - Taylor Sutton
  283.  uri - Oriol Castejón (Universitat Politècnica de Catalunya, Barcelona, Spain)
  284.  usarkar - Utpal Sarkar (HP, Barcelona and student at the UPC, Barcelona)
  285.  vbraun - Volker Braun (Dublin Institute for Advanced Studies)
  286.  vdelecroix -  Vincent Delecroix (Université de la Méditerranée, Marseille, France)
  287.  vferay - Valentin Féray (LaBRI, Bordeaux, France)
  288.  victor -  Victor Miller (Princeton, NJ)
  289.  VivianePons  Viviane Pons (UPEMLV, Marne-la-Vallée, France)
  290.  was -  William Stein (University of Washington)
  291.  wcauchois -  Bill Cauchois (University of Washington, Seattle)
  292.  wdj - David Joyner
  293.  weigandt - Jamie Weigandt (Purdue University)
  294.  whuss - Wilfried Huss (Graz University of Technology, Austria)
  295.  wjlaffin -  William Laffin (Michigan Technological University)
  296.  wjp - Willem Jan Palenstijn
  297.  wuthrich - Chris Wuthrich (Nottingham, uk)
  298.  ylchapuy - Yann Laigle-Chapuy
  299.  yponty -  Yann Ponty (CNRS-Ecole Polytechnique)
  300.  zabrocki -  Mike Zabrocki (York University)
  301.  zimmerma -  Paul Zimmermann (LORIA/INRIA, Nancy, France)