#13503: Enhancement of `is_triangle_free' addition of `triangles_count' and a
minor
change in `spanning_trees_count'
----------------------------------------------------------+-----------------
Reporter: azi | Owner:
jason, ncohen, rlm
Type: enhancement | Status:
needs_work
Priority: minor | Milestone:
sage-5.4
Component: graph theory | Resolution:
Keywords: triangles, graphs, number of triangles | Work issues:
Report Upstream: N/A | Reviewers:
David Coudert
Authors: Jernej Azarija | Merged in:
Dependencies: | Stopgaps:
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Comment (by rbeezer):
Replying to [comment:21 dcoudert]:
> A reasonably fast alternative to matrix multiplication (could be
improved):
I like the looks of `my_is_triangle_free_bitset`.
It is too bad more of these bit-by-bit type operations are not more easily
available for graphs. I know the folks working on the matroid classes are
implementing a lot of duplicate functionality to be faster in tese sorts
of situations (like matrix operations).
Rob
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13503#comment:22>
Sage <http://www.sagemath.org>
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