#15327: More minor tableau and skew_tableau optimizations, and moving out
attacking_pairs
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Reporter: darij | Owner:
Type: | Status: new
enhancement | Milestone: sage-5.13
Priority: major | Keywords: sage-combinat, tableau,
Component: | partition, skew tableau
combinatorics | Authors: Darij Grinberg
Merged in: | Report Upstream: N/A
Reviewers: | Branch:
Work issues: | Dependencies: #15269
Commit: |
Stopgaps: |
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This patch brings some little speedups on tableaux and skew tableaux, in
particular copying over the #15269 fixes to `skew_tableau.py`. It also
modifies the semantics of the `to_chain` function so as to allow an
optional `max_entry` parameter (which makes it return a chain of a given
length -- useful if one is considering semistandard tableaux with ceiling
higher than the highest entry). Furthermore it moves the `attacking_pairs`
method from `tableau.py` to `partition.py`, and deprecates it in
`tableau.py`. In the only place where this method is used, it is factored
in for speed reasons.
Patch to come in 20 minutes.
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Ticket URL: <http://trac.sagemath.org/ticket/15327>
Sage <http://www.sagemath.org>
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