#18194: Speedup of calculation of Macdonald H and Ht bases
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Reporter: zabrocki | Owner:
Type: enhancement | Status: needs_review
Priority: minor | Milestone: sage-6.6
Component: combinatorics | Resolution:
Keywords: sf, days67, sage- | Merged in:
combinat | Reviewers: Travis Scrimshaw
Authors: Mike Zabrocki | Work issues:
Report Upstream: N/A | Commit:
Branch: | b1e92f40a5771d11c6e6244a7c68c55a58672eaf
public/combinat/mac_speedup-18194 | Stopgaps:
Dependencies: |
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Changes (by zabrocki):
* status: needs_work => needs_review
Comment:
This version seems to have the faster timings. I did as you suggested and
handled the `t==0` case separately and this only needs to happen in the
`H` basis (the `Ht` basis doesn't invert `t` so does not need to be
handled separately). To handle the `t==0` case separately I use the Hall-
Littlewood `Qp` basis. That corner case will probably run even faster
than before but I didn't test it beyond ensuring that it works.
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Ticket URL: <http://trac.sagemath.org/ticket/18194#comment:30>
Sage <http://www.sagemath.org>
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