Opened 4 years ago
Closed 4 years ago
#21890 closed enhancement (fixed)
add strongly regular (196,60,14,20)graph to the database of SRGs
Reported by:  dimpase  Owned by:  

Priority:  major  Milestone:  sage8.0 
Component:  graph theory  Keywords:  
Cc:  dcoudert, vdelecroix  Merged in:  
Authors:  Dima Pasechnik  Reviewers:  Travis Scrimshaw 
Report Upstream:  N/A  Work issues:  
Branch:  f0e1829 (Commits)  Commit:  f0e18290cc91018841820bb335ffa9b4d5f607e9 
Dependencies:  #21155  Stopgaps: 
Description
This is constructed in Tayuan Huang, Lingling Huang & MiaowIng Lin, On a class of strongly regular designs and quasisemisymmetric designs, Recent Developments in Algebra and Related Areas: ALM 8, pp. 129–153
Change History (18)
comment:1 Changed 4 years ago by
 Branch set to u/dimpase/hhl09
 Commit set to f9d1c4afcac22ff14129b6c70f877ce8a4e9b299
 Work issues set to figure out formula for parameters
comment:2 Changed 4 years ago by
 Commit changed from f9d1c4afcac22ff14129b6c70f877ce8a4e9b299 to 9e7a4cf0419b27330c756370bd5e7736c211aeb6
Branch pushed to git repo; I updated commit sha1. Last 10 new commits:
e751532  Merge branch 'u/dimpase/muzS6' of trac.sagemath.org:sage into muz61

f6d862f  removed broken usersupplied Sigma dict parameter;

66b5648  Merge branch 'muz61' into muzS6bis

b6a169f  fix a typo mentioned on #21061

12ed381  added EPSRC ackn. for Rowan

df0c845  Merge branch 'u/dimpase/muzS6' of trac.sagemath.org:sage into iokar

2c74c1e  backslash!

b9a96c0  Merge branch 'develop' into muz

25bef77  implemented reviewer's suggestions

9e7a4cf  Merge branch 'u/dimpase/hhl09' of trac.sagemath.org:sage into muz

comment:3 Changed 4 years ago by
 Dependencies set to #21155
comment:4 Changed 4 years ago by
 Commit changed from 9e7a4cf0419b27330c756370bd5e7736c211aeb6 to ed3876f811bc10b9bea210b1cf1105ad892cf141
Branch pushed to git repo; I updated commit sha1. New commits:
ed3876f  added recognition function

comment:5 Changed 4 years ago by
 Status changed from new to needs_review
comment:6 Changed 4 years ago by
 Cc dcoudert added
comment:7 Changed 4 years ago by
 Cc vdelecroix added
 Work issues figure out formula for parameters deleted
comment:8 Changed 4 years ago by
patchbot coverage plugin complains here about something not relevant to this ticket/branch. And, by the way, there is also now #21889 ready for review, depending on this ticket...
comment:9 Changed 4 years ago by
timeouts on the bot are irrelevant, caused by giac.
comment:10 Changed 4 years ago by
 Milestone changed from sage7.5 to sage7.6
patchbot says
 sage t long src/sage/groups/perm_gps/permgroup_named.py # Timed out sage t long src/sage/modular/abvar/abvar.py # Timed out
but this is certainly nothing to worry about.
comment:11 Changed 4 years ago by
 Milestone changed from sage7.6 to sage8.0
a startup plugin failing, but otherwise (sane) patchbots are happy.
comment:12 Changed 4 years ago by
Some small tweaks:
 Period missing at the end of the 1line description.
..math::
>.. MATH::
.<v,o_1>
>\langle v, o_1 \rangle
(and similar).
comment:13 Changed 4 years ago by
 Commit changed from ed3876f811bc10b9bea210b1cf1105ad892cf141 to f0e18290cc91018841820bb335ffa9b4d5f607e9
comment:14 Changed 4 years ago by
fixed, please have another look.
comment:15 Changed 4 years ago by
 Reviewers set to Travis Scrimshaw
 Status changed from needs_review to positive_review
Thanks, LGTM.
comment:16 Changed 4 years ago by
Thanks a a lot. It's hard to find people to review...
comment:17 Changed 4 years ago by
Sorry for not helping reviewing this ticket, but I'm not confident with this kind of construction.
comment:18 Changed 4 years ago by
 Branch changed from u/dimpase/hhl09 to f0e18290cc91018841820bb335ffa9b4d5f607e9
 Resolution set to fixed
 Status changed from positive_review to closed
New commits:
implemented Brouwer's construction