#18539: faster matroid 3 connectivity
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Reporter: chaoxu | Owner: chaoxu
Type: enhancement | Status: new
Priority: major | Milestone: sage-6.8
Component: matroid theory | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/chaoxu/faster_matroid_3_connectivity|
84a81fdefe60c488faf9e4610c170c985e0c5f2f
Dependencies: | Stopgaps:
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Comment (by Rudi):
Hi Chao,
I have reduced the amount of time spent on is_cosimple() as well, see
ticket #18605. Together with the patch for components() this leaves
minor() as the main bottleneck. Not so sure if I can make that one much
more efficient.
Looking at the effect of my patches on various types of matroids I ran
into a bug. Try this:
{{{
sage: M=Matroid(graphs.RandomRegular(3,200))
sage: M.is_3connected_beta()
}}}
It's random, but nearly always results in a error.
--
Ticket URL: <http://trac.sagemath.org/ticket/18539#comment:21>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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