#16630: Fix category for finite Coxeter groups
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Reporter: tscrim | Owner: tscrim
Type: defect | Status: needs_review
Priority: major | Milestone: sage-6.3
Component: group theory | Resolution:
Keywords: Coxeter, category | Merged in:
Authors: Travis Scrimshaw | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
public/groups/fix_category_finite_coxeter-16630|
0f2941a9ec0dd54531a5349f10dc3c1a5ae5f1d0
Dependencies: #16633 #16634 | Stopgaps:
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Comment (by tscrim):
As far as I've tested. The fallback (in case an error is raised) is to
check by comparing Coxeter matrices under the standard labeling, but does
not break it up into irreducible components. It probably is better to do
the process entirely using graph comparisons (it feels like it should be
slower, but maybe it's not...). Although no such check has been
implemented for Coxeter diagrams/matrices, which currently don't have
dedicated classes (#16126). (BTW there's only limited support for Dynkin
diagrams.)
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Ticket URL: <http://trac.sagemath.org/ticket/16630#comment:5>
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