#11546: Implementation of energy function for crystals
-----------------------------+----------------------------------------------
Reporter: aschilling | Owner: sage-combinat
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-4.7.2
Component: combinatorics | Keywords: energy, crystals
Work_issues: | Upstream: N/A
Reviewer: | Author: Anne Schilling
Merged: | Dependencies:
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Description changed by aschilling:
Old description:
> This patch implements the energy function for affine crystals and adds an
> entry in the corresponding thematic tutorial.
>
> The update to the thematic tutorial can be built using
>
> {{{
> sage -docbuild thematic_tutorials html
> }}}
>
> is available here:
>
> http://www.math.ucdavis.edu/~anne/sage/lie/affine_crystals.html
New description:
This patch implements the energy function and affine grading for affine
crystals and adds an entry in the corresponding thematic tutorial.
In addition, it removes the condition that for the Lusztig involution the
element is supposed to live in a crystal with a single highest weight
element, and modifies the methods
to_highest_weight and to_lowest_weight in crystal.py to make them more
robust.
The update to the thematic tutorial can be built using
{{{
sage -docbuild thematic_tutorials html
}}}
is available here:
http://www.math.ucdavis.edu/~anne/sage/lie/affine_crystals.html
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11546#comment:3>
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