#15864: Graph.is_distance_regular is awfully wrong
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Reporter: | Owner:
ncohen | Status: needs_review
Type: | Milestone: sage-6.2
defect | Resolution:
Priority: major | Merged in:
Component: graph | Reviewers:
theory | Work issues:
Keywords: | Commit:
Authors: | f6541444499809d3af167c9a3632baa98449b0f2
Nathann Cohen | Stopgaps:
Report Upstream: N/A |
Branch: |
u/ncohen/15864 |
Dependencies: |
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Comment (by dimpase):
in the literature the order of these lists:
{{{
sage: g.is_distance_regular(parameters = True)
([0, 1, 1], [3, 2, 0])
}}}
is normally the opposite, and the last entry, which is always 0, 0 in the
list beginning with the valence is omitted, and the 1st entry, always 0,
in the other list is omitted too. I suggest we follow this convention.
I.e. here it should be ```([3,2],[1,1])```
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Ticket URL: <http://trac.sagemath.org/ticket/15864#comment:6>
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