#15864: Graph.is_distance_regular is awfully wrong
-------------------------------------+-------------------------------------
Reporter: ncohen | Owner:
Type: defect | Status: needs_review
Priority: major | Milestone: sage-6.2
Component: graph theory | Resolution:
Keywords: | Merged in:
Authors: Nathann Cohen | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/dimpase/ticket/15864 | 0b540be503548ad881305f820552bc06d14b0771
Dependencies: | Stopgaps:
-------------------------------------+-------------------------------------
Comment (by dimpase):
Well, this is the standard notation. Might be a bit awkward, indeed. These
numbers are best understood as entries of the
[http://en.wikipedia.org/wiki/Distance-regular_graph#Intersection_numbers
"intersection matrix"], which in this case happens to be 3-diagonal.
--
Ticket URL: <http://trac.sagemath.org/ticket/15864#comment:12>
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 unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sage-trac.
For more options, visit https://groups.google.com/groups/opt_out.
