#10632: Implementation of spin tableaux crystals and additional nonexceptional
Kirillov-Reshetikhin crystals
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Reporter: aschilling | Owner: sage-combinat
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-4.6.2
Component: combinatorics | Keywords: crystals
Author: Anne Schilling | Upstream: N/A
Reviewer: Dan Bump, Nicolas M. Thiery | Merged:
Work_issues: |
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Description changed by aschilling:
Old description:
> This patch adds the following new features for crystals:
>
> * CrystalOfTableaux now also accepts half-integer shapes for spin
> tableaux for type `B_n` and `D_n`
>
> * Spin crystals have a new method _repr_ using the signature
> representation and a new latex method
>
> * New latex method for Crystal category using digraph
>
> * New set_latex_options in the digraph method for crystals
>
> * Shortcut for 3d plotting of crystals
>
> * Fixed bad doc tests in HighestWeightCrystals
>
> * New alternative implementation of KR crystals of type `A_{2n}^{(2)}`
> by using the B_n classical decomposition
>
> * Implementation of KR crystals `B^{n,s}` of types `B_n^{(1)}`,
> `C_n^{(1)}`, `D_{n+1}^{(2)}`
>
> Depends on trac #10723.
New description:
#trac 10632
This patch adds the following new features for crystals:
* CrystalOfTableaux now also accepts half-integer shapes for spin
tableaux for type `B_n` and `D_n`
* Spin crystals have a new method _repr_ using the signature
representation and a new latex method
* New latex method for Crystal category using digraph
* New set_latex_options in the digraph method for crystals
* Moved method to_highest_weight from HighestWeightCrystals to Crystals
(since it is possible to specify an index_set); appropriate exceptions are
raised when the crystal is not highest weight.
* Shortcut for 3d plotting of crystals
* Fixed bad doc tests in HighestWeightCrystals
* New alternative implementation of KR crystals of type `A_{2n}^{(2)}`
by using the B_n classical decomposition
* Implementation of KR crystals `B^{n,s}` of types `B_n^{(1)}`,
`C_n^{(1)}`, `D_{n+1}^{(2)}`
* Added a comparison method to Kirillov-Reshetikhin crystals (in order
to be able to use digraph methods for tensor products of KR crystals)
Depends on trac #10723.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10632#comment:11>
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