#15462: Fix phi for general tensor product of crystals
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Reporter: tscrim | Owner: sage-combinat
Type: defect | Status: new
Priority: major | Milestone: sage-6.0
Component: combinatorics | Keywords: crystals
Merged in: | Authors: Travis Scrimshaw
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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When not working with regular crystals, one gets an infinite recursion
when calling `phi`:
{{{
sage: B = CrystalOfTableaux(['A',2], shape=[2,1])
sage: La = RootSystem(['A',2]).ambient_space().fundamental_weights()
sage: T = TensorProductOfCrystals(TCrystal(['A',2], La[1]+La[2]), B)
sage: t = T.an_element()
sage: t.phi(1)
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/15462>
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