#20943: Update a missing important speed improvement for subword complexes
-------------------------------------+-------------------------------------
Reporter: stumpc5 | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-7.3
Component: combinatorics | Resolution:
Keywords: reflection group, | Merged in:
coxeter group, subword complex, |
days80 |
Authors: Christian Stump | Reviewers:
Report Upstream: N/A | Work issues:
Branch: u/stumpc5/20943 | Commit:
| 35a98d714455b0c2408e0420550997c0f7232dd9
Dependencies: | Stopgaps:
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Comment (by stumpc5):
The timings should still be the old as the change
{{{
- return ZZ.sum(self.degrees()) - self.rank()
+ return ZZ.sum(deg-1 for deg in self.degrees())
}}}
should not make any difference... (just checked, no change there). It
would be better if we either do a speed improvement of the {{{degrees}}}
method for {{{WeylGroup}}} and {{{CoxeterGroup}}}, or make
{{{number_of_reflections}}} there use the length of the longest element
there instead.
--
Ticket URL: <https://trac.sagemath.org/ticket/20943#comment:14>
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