#18972: twographs and Seidel switching
-------------------------------------+-------------------------------------
Reporter: dimpase | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.9
Component: graph theory | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/dimpase/seidelsw | 7331311b78d59d5e932fd92af3a4cb4a3188a348
Dependencies: #18960, #18948 | Stopgaps:
-------------------------------------+-------------------------------------
Changes (by dimpase):
* dependencies: => #18960, #18948
Comment:
we now can build not yet known to Sage
`graphs.strongly_regular_graph(279,150,85)`
{{{
sage: A=graphs.strongly_regular_graph(280,135,70)
sage: gTA=A.twograph().descendant(A.vertices()[0]) #long time
sage: gTA.is_strongly_regular(parameters=True)
(279, 150, 85, 75)
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/18972#comment:17>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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