#12355: Bug in Graph.girth
-----------------------------+----------------------------------------------
Reporter: ncohen | Owner: jason, ncohen, rlm
Type: defect | Status: needs_info
Priority: major | Milestone: sage-5.0
Component: graph theory | Keywords:
Work_issues: | Upstream: N/A
Reviewer: David Coudert | Author: Nathann Cohen
Merged: | Dependencies:
-----------------------------+----------------------------------------------
Comment(by ncohen):
> However, I don't understand the behavior for digraphs. What should be
the correct answer for a digraph with a pair of symmetric arcs? For
instance, for the digraph with arc set [(0,1),(1,0),(1,2),(2,0)], the
girth is 2 or 3? and what if the digraph has loops?
Well, 1 if there is a loop in the graph, and 2 if there is a pair of
symmetric arcs.
I hate loops, and I hate symmetric arcs. `:-P`
Nathann
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12355#comment:3>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/sage-trac?hl=en.
