#18447: Implement dual-quasi-Schur basis in NCSF
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Reporter: zabrocki | Owner:
Type: enhancement | Status: new
Priority: minor | Milestone: sage-6.7
Component: combinatorics | Resolution:
Keywords: ncsf, qsym, | Merged in:
quasiSchur | Reviewers:
Authors: | Work issues:
Report Upstream: N/A | Commit:
Branch: | b987e7ec4a6b0f546481673d193a84d5e42bcab1
public/combinat/zabrocki/ncsf_quasi_schur_basis/18447| Stopgaps:
Dependencies: #18415 |
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Comment (by zabrocki):
It occurs to me that in a typical session that one is likely to be doing
many calculations with a basis at a given degree. For this reason branch
b8cefb8 works better with these tests doing many loops (NB: with a
@cached_method before the _to_monomial_on_basis) . The change in branch
1091d7a is faster for a single change of basis calculation from monomial
to QS but normally we do many in one session.
It is possible that I want to undo the edits in commit 0ba7a67 for the
same reason. That will make a single change of basis calculation from the
dQS to the complete basis run faster (as my timing tests indicated in
comment 11), but many calculations from dQS to complete/ribbon might run
faster with the previous code because the change of basis matrix is
calculated once for a given degree.
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Ticket URL: <http://trac.sagemath.org/ticket/18447#comment:15>
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