#9290: Implement Coxeter groups in their geometric representation
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Reporter: nthiery | Owner: sage-combinat
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.12
Component: combinatorics | Resolution:
Keywords: coxeter | Merged in:
Authors: Travis Scrimshaw | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by chapoton):
one doctest failing
{{{
File
"/home/chapoton/sage-5.12.beta5/devel/sage/sage/groups/matrix_gps/coxeter_group.py",
line 278, in
sage.groups.matrix_gps.coxeter_group.CoxeterMatrixGroup.__init__
Failed example:
TestSuite(W).run(max_runs=30) # long time
Expected nothing
Got:
Failure in _test_matrix_generators:
Traceback (most recent call last):
File "/home/chapoton/sage-5.12.beta5/local/lib/python2.7/site-
packages/sage/misc/sage_unittest.py", line 282, in run
test_method(tester = tester)
File "/home/chapoton/sage-5.12.beta5/local/lib/python2.7/site-
packages/sage/groups/matrix_gps/finitely_generated.py", line 376, in
_test_matrix_generators
tester.assertEqual(g.matrix(), h.matrix())
File "cachefunc.pyx", line 1774, in
sage.misc.cachefunc.CachedMethodCallerNoArgs.__call__
(sage/misc/cachefunc.c:9546)
File "/home/chapoton/sage-5.12.beta5/local/lib/python2.7/site-
packages/sage/groups/matrix_gps/group_element.py", line 447, in matrix
m = g.matrix(self.base_ring())
File "element.pyx", line 1076, in
sage.libs.gap.element.GapElement.matrix (sage/libs/gap/element.c:8618)
File "element.pyx", line 1473, in
sage.libs.gap.element.GapElement_Cyclotomic.sage
(sage/libs/gap/element.c:10511)
File "parent.pyx", line 761, in
sage.structure.parent.Parent.__getattr__ (sage/structure/parent.c:6823)
File "misc.pyx", line 251, in
sage.structure.misc.getattr_from_other_class (sage/structure/misc.c:1606)
AttributeError: 'UniversalCyclotomicField_with_category' object has no
attribute '_n'
------------------------------------------------------------
The following tests failed: _test_matrix_generators
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/9290#comment:9>
Sage <http://www.sagemath.org>
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