#5794: [with patch, postive review, depends on #4326] exceptional and reducible
type branching rules
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Reporter: bump | Owner: bump
Type: enhancement | Status: assigned
Priority: major | Milestone: sage-4.1.1
Component: group_theory | Keywords: lie groups
Reviewer: | Author:
Merged: |
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Comment(by sage-combinat):
Patch review: trac_5794
The patch author is a widely acknowledged expert in the area, having
written a textbook which includes a discussion of the root systems and
branching rules implemented here. Although we did not check all of the
details of the algorithms, the root system code has been used by the
reviewer to implement the alcove path model for crystals of Lenart and
Postnikov, and the branching code has computed some verified data in type
E_6. This patch implements useful mathematics and the extensive
documentation includes references to relevant mathematical literature.
There are currently two warnings for the reference manual (sage -docbuild
reference html); these require help from Sage developers to be fixed. The
Sage library test passes, and all methods have doctests which pass.
-- Brant Jones
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/5794#comment:23>
Sage <http://sagemath.org/>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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