#18194: Speedup of calculation of Macdonald H and Ht bases
-------------------------------------+-------------------------------------
Reporter: zabrocki | Owner:
Type: enhancement | Status: needs_work
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: | 9196d339a8adafb0c011d0f0ddb4172fbcbdd136
public/combinat/mac_speedup-18194 | Stopgaps:
Dependencies: |
-------------------------------------+-------------------------------------
Changes (by tscrim):
* commit: a70a5314dbc203c66a08f1f070b739112921a146 =>
9196d339a8adafb0c011d0f0ddb4172fbcbdd136
* branch: public/combinat/zabrocki/mac_speedup =>
public/combinat/mac_speedup-18194
* reviewer: => Travis Scrimshaw
Comment:
I did some cleanup of the docstrings and imports. However there are some
doctest failures:
{{{
----------------------------------------------------------------------
sage -t ../../tests/book_schilling_zabrocki_kschur_primer.py # 1 doctest
failed
sage -t ../../structure/parent.pyx # 1 doctest failed
----------------------------------------------------------------------
}}}
The second one is slightly worrysome in that the coercion path has gotten
longer, but it is not so bad. The first one is much more serious as I (and
the patchbot) get a division by zero error on this test:
{{{
sage: Sym = SymmetricFunctions(FractionField(QQ['q']))
sage: Mac = Sym.macdonald(t=0)
sage: H = Mac.H()
sage: s = Sym.schur()
sage: for la in Partitions(3):
....: print "H",la, "=", s(H(la))
}}}
I suspect your computational assumptions are not always being met and lead
to this error.
----
New commits:
||[http://git.sagemath.org/sage.git/commit/?id=71c9ae0bd14cffdcff827a8c0490dbc482f29b2e
71c9ae0]||{{{Merge branch 'public/combinat/zabrocki/mac_speedup' of
trac.sagemath.org:sage into public/combinat/zabrocki/mac_speedup}}}||
||[http://git.sagemath.org/sage.git/commit/?id=9196d339a8adafb0c011d0f0ddb4172fbcbdd136
9196d33]||{{{Some cleanup of the docstrings and line lengths.}}}||
--
Ticket URL: <http://trac.sagemath.org/ticket/18194#comment:12>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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