#12243: Girth of a graph fails for non-integer vertices
----------------------------+-----------------------------------------------
Reporter: rbeezer | Owner: jason, ncohen, rlm
Type: defect | Status: new
Priority: minor | Milestone: sage-4.8
Component: graph theory | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
----------------------------+-----------------------------------------------
The Odd graph, {{{O_3}}}, is the Petersen Graph, which has girth 5.
{{{
sage: P = graphs.PetersenGraph()
sage: P.girth()
5
sage: K = graphs.OddGraph(3)
sage: K.is_isomorphic(P)
True
sage: K.girth()
+Infinity
}}}
But the result implies there are no cycles in K.
See sage-devel thread
http://groups.google.com/group/sage-
devel/browse_thread/thread/8dc807a3710e3dee
for more discussion.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12243>
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.
