#19140: Implement general energy function
-------------------------------------+-------------------------------------
       Reporter:  tscrim             |        Owner:  sage-combinat
           Type:  enhancement        |       Status:  positive_review
       Priority:  major              |    Milestone:  sage-7.4
      Component:  combinatorics      |   Resolution:
       Keywords:  KR crystals,       |    Merged in:
  energy function                    |
        Authors:  Travis Scrimshaw   |    Reviewers:  Anne Schilling
Report Upstream:  N/A                |  Work issues:
         Branch:  public/crystals    |       Commit:
  /energy_function-19140II           |  961d1d0629f4b730fe5bb051ef8e1839657c1aab
   Dependencies:                     |     Stopgaps:
-------------------------------------+-------------------------------------
Changes (by aschilling):

 * status:  needs_review => positive_review
 * reviewer:   => Anne Schilling


Old description:

> Because sometimes the slowest version is useful (and it works in full
> generality).

New description:

 This patch implements the energy function from the definition, which is
 not very efficient. But it works in full generality (unlike the current
 implementation which only works for tensor products of perfect crystals of
 the same level).

--

Comment:

 I discussed this with Travis in person and it looks good.

--
Ticket URL: <https://trac.sagemath.org/ticket/19140#comment:9>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
and MATLAB

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