#19458: Fix Homset for highest weight crystal to crystal morphism
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   Reporter:  tscrim      |            Owner:  sage-combinat
       Type:  defect      |           Status:  new
   Priority:  major       |        Milestone:  sage-6.10
  Component:  categories  |         Keywords:
  Merged in:              |          Authors:  Travis Scrimshaw
  Reviewers:              |  Report Upstream:  N/A
Work issues:              |           Branch:
     Commit:              |     Dependencies:
   Stopgaps:              |
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 We currently have this
 {{{
 sage: Binf = crystals.infinity.Tableaux(['A',2])
 sage: Bi = crystals.elementary.Elementary(Binf.cartan_type(), 1)
 sage: tens = Bi.tensor(Binf)
 sage: Hom(Binf, tens)
 Set of Morphisms from ...
 }}}
 but we should create a generic ''crystal'' homset, not set morphisms.

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Ticket URL: <http://trac.sagemath.org/ticket/19458>
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