#15550: Implement the Kirchhoff-Symanzik polynomial for graphs
-------------------------------------+-------------------------------------
Reporter: chapoton | Owner:
Type: enhancement | Status: needs_review
Priority: minor | Milestone: sage-6.1
Component: graph theory | Resolution:
Keywords: symanzik | Merged in:
polynomial | Reviewers: Nathann Cohen
Authors: Frédéric Chapoton | Work issues:
Report Upstream: N/A | Commit:
Branch: public/15550 | 11f9ec629663de71d7578dc1c5f7034238715c11
Dependencies: | Stopgaps:
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Comment (by ncohen):
Hmmmmm... It was actually slightly more complicated than that. This, and
supper in between.
Technically :
* networkx refuses to work on a graph that allows multiple edges, even if
it does not contain any
* `cycle_basis` now handles disconnected graphs
Aaaaaaaaand I found a bug with those cursed multiple edges again :
{{{
sage: g = Graph({0:{1:[1,1]}}, multiedges=True)
sage: g.edges()
[(0, 1, 1), (0, 1, 1)]
sage: (2*g).edges()
[(0, 1, 1), (2, 3, 1)]
}}}
I hate these things...
Anyway, branch updated. Tell me what you think !
Nathann
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Ticket URL: <http://trac.sagemath.org/ticket/15550#comment:34>
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