Ticket #2854 (closed defect: duplicate)
A correction to the weight of crystal elements for type A and a speedup for all types
| Reported by: | bump | Owned by: | mhansen |
|---|---|---|---|
| Priority: | minor | Milestone: | sage-duplicate/invalid/wontfix |
| Component: | combinatorics | Keywords: | |
| Cc: | sage-combinat | Author(s): | |
| Report Upstream: | Reviewer(s): | ||
| Merged in: | Work issues: |
Description
For Cartan Types 'A' a problem with the weight function of crystals was described here:
http://groups.google.com/group/sage-combinat-devel/browse_thread/thread/7cdfe075257ba963?hl=en
The method of correcting this problem was to hard-code the weight in the crystals of letters, and to have the crystals of tensors get the weight of a tensor element by summing the weights of its constituents. This alters the weight for Type A (correcting the defect) and returns the same weight as the old algorithm for other Cartan types.
When the patch was implemented it was found to be 2-3 times faster than the old algorithm.
Attachments
-
crystal_weights.patch
(6.1 KB) - added by bump
2 years ago.
Change History
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