#14089: Speed improvements in affine crystals and fix of optional doctest
failure
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Reporter: aschilling | Owner: sage-combinat
Type: defect | Status: needs_review
Priority: major | Milestone: sage-5.8
Component: combinatorics | Resolution:
Keywords: crystals | Work issues:
Report Upstream: N/A | Reviewers: Nicolas M. Thiery
Authors: Anne Schilling | Merged in:
Dependencies: #14052 | Stopgaps:
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Comment (by tscrim):
Does this also speed up the type `['D', n, 1]` spin KR crystals (right now
they take a long time because `promotion_on_highest_weight_vectors()`
iterates over the entire crystal and is called 3 times)?
Also, for the `index_set()` method in `categories/crystals.py`, could we
change it so that it returns `self._cartan_type.index_set()`? It seems
that `CrystalOfTableaux` is the only crystal which directly implements
`cartan_matrix()` and does not have the `_cartan_matrix` attribute. This
seems to drop the number of function calls when iterating over crystals by
about 10%.
Thanks,[[BR]]
Travis
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14089#comment:3>
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