#20170: Implement reflections for affine Weyl groups
-------------------------------------+-------------------------------------
Reporter: tscrim | Owner: sage-combinat
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-7.2
Component: combinatorics | Resolution:
Keywords: reflections, Weyl | Merged in:
groups | Reviewers: Frédéric Chapoton
Authors: Travis Scrimshaw | Work issues:
Report Upstream: N/A | Commit:
Branch: | 762aaf1efe5ac7bd31de83ea2757b7b219a16d7d
public/combinat/reflections_infinite_weyl_groups-20170| Stopgaps:
Dependencies: #20027 |
-------------------------------------+-------------------------------------
Changes (by vbraun):
* status: positive_review => needs_work
Comment:
Probably interaction with some other ticket in beta1:
{{{
sage -t --long src/sage/categories/coxeter_groups.py
**********************************************************************
File "src/sage/categories/coxeter_groups.py", line 1315, in
sage.categories.coxeter_groups.CoxeterGroups.ElementMethods.absolute_covers
Failed example:
w0.absolute_covers()
Expected:
[
[0 0 0 1] [0 0 1 0] [0 1 0 0] [0 1 0 0] [0 1 0 0]
[1 0 0 0] [1 0 0 0] [0 0 1 0] [0 0 0 1] [1 0 0 0]
[0 0 1 0] [0 1 0 0] [1 0 0 0] [0 0 1 0] [0 0 0 1]
[0 1 0 0], [0 0 0 1], [0 0 0 1], [1 0 0 0], [0 0 1 0]
]
Got:
[
[0 0 1 0] [0 1 0 0] [0 0 0 1] [0 1 0 0] [0 1 0 0]
[1 0 0 0] [1 0 0 0] [1 0 0 0] [0 0 1 0] [0 0 0 1]
[0 1 0 0] [0 0 0 1] [0 0 1 0] [1 0 0 0] [0 0 1 0]
[0 0 0 1], [0 0 1 0], [0 1 0 0], [0 0 0 1], [1 0 0 0]
]
**********************************************************************
1 item had failures:
1 of 6 in
sage.categories.coxeter_groups.CoxeterGroups.ElementMethods.absolute_covers
[469 tests, 1 failure, 16.41 s]
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/20170#comment:5>
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