#19342: Goethals-Seidel constructions of strongly regular graphs
-------------------------+-------------------------------------------------
Reporter: | Owner:
ncohen | Status: needs_work
Type: | Milestone: sage-6.9
enhancement | Resolution:
Priority: major | Merged in:
Component: graph | Reviewers:
theory | Work issues:
Keywords: | Commit:
Authors: | 7146ae68993635d63ed7ecf222af880ec8aec5c8
Nathann Cohen | Stopgaps:
Report Upstream: N/A |
Branch: |
u/ncohen/19342 |
Dependencies: |
#19341 |
-------------------------+-------------------------------------------------
Changes (by vdelecroix):
* status: needs_review => needs_work
Comment:
From the patchbot
{{{
sage -t --long src/sage/graphs/strongly_regular_db.pyx
**********************************************************************
File "src/sage/graphs/strongly_regular_db.pyx", line 362, in
sage.graphs.strongly_regular_db.is_goethals_seidel
Failed example:
t = is_goethals_seidel(28, 15, 6, 10); t
Expected:
[<function GoethalsSeidelGraph at 0x7feac4de47d0>, 3, 3]
Got:
[<function GoethalsSeidelGraph at 0x7fdf081e0aa0>, 3, 3]
**********************************************************************
File "src/sage/graphs/strongly_regular_db.pyx", line 369, in
sage.graphs.strongly_regular_db.is_goethals_seidel
Failed example:
t = is_goethals_seidel(256, 135, 70, 72); t
Expected:
[<function GoethalsSeidelGraph at 0x7feac4de47d0>, 2, 15]
Got:
[<function GoethalsSeidelGraph at 0x7fdf081e0aa0>, 2, 15]
**********************************************************************
1 item had failures:
2 of 10 in sage.graphs.strongly_regular_db.is_goethals_seidel
[223 tests, 2 failures, 38.95 s]
sage -t --long src/sage/graphs/generators/families.py
**********************************************************************
File "src/sage/graphs/generators/families.py", line 716, in
sage.graphs.generators.families.GoethalsSeidelGraph
Failed example:
graphs.GoethalsSeidelGraph(3,3).is_strongly_regular(parameters=True)
Expected:
(28, 12, 6, 4)
Got:
(28, 15, 6, 10)
**********************************************************************
1 item had failures:
1 of 3 in sage.graphs.generators.families.GoethalsSeidelGraph
[237 tests, 1 failure, 26.84 s]
----------------------------------------------------------------------
sage -t --long src/sage/graphs/strongly_regular_db.pyx # 2 doctests
failed
sage -t --long src/sage/graphs/generators/families.py # 1 doctest failed
----------------------------------------------------------------------
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/19342#comment:4>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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