#15375: Extended Affine Weyl Groups SD40
-------------------------------------+-------------------------------------
Reporter: bump | Owner: bump
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-6.8
Component: combinatorics | Resolution:
Keywords: days54, coxeter, | Merged in:
days64, days65 | Reviewers: Dan Bump, Anne
Authors: Daniel Bump, Dan | Schilling
Orr, Anne Schilling, Mark | Work issues:
Shimozono, Nicolas Thiery. | Commit:
Report Upstream: N/A | c021d03217b1f205a577e0a9a1a7f6b1d567789b
Branch: | Stopgaps:
public/combinat/extended_affine_weyl_groups-15375|
Dependencies: #10963, #14102 |
-------------------------------------+-------------------------------------
Comment (by aschilling):
Replying to [comment:66 mshimo]:
> Get rid of from_vector_notation.
I got rid of it in my last commit.
> Group generators are not relevant for E.
> E is not an actual realization.
>
> E.PW0() is a group and so on.
But even for that it does not work for me:
{{{
sage: E=ExtendedAffineWeylGroup(['A',2,1])
sage: PW0=E.PW0()
sage: PW0.group_generators()
---------------------------------------------------------------------------
NotImplementedError Traceback (most recent call
last)
<ipython-input-3-d69de239d91b> in <module>()
----> 1 PW0.group_generators()
/Applications/sage/local/lib/python2.7/site-
packages/sage/categories/groups.pyc in group_generators(self)
108 return Family(self.gens())
109 except AttributeError:
--> 110 raise NotImplementedError("no generators are
implemented for this group")
111
112 def monoid_generators(self):
NotImplementedError: no generators are implemented for this group
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/15375#comment:69>
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