#17205: update ore_algebra package
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Reporter: zieglerk | Owner:
Type: defect | Status: needs_review
Priority: major | Milestone: sage-6.4
Component: packages: | Resolution:
optional | Merged in:
Keywords: ImportError | Reviewers: Karl-Dieter Crisman,
Authors: Manuel Kauers | John Palmieri, Konstantin Ziegler
Report Upstream: Fixed upstream, | Work issues:
in a later stable release. | Commit:
Branch: | Stopgaps:
Dependencies: |
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Comment (by mkauers):
Replying to [comment:14 jhpalmieri]:
> For what it's worth, I see the same error in Sage 6.1 and Sage 6.2,
using version 0.1 of the spkg and the lines from [comment:4]:
> So either I'm doing something wrong (in which case the example in
`nullspace.py` is wrong, or at least unclear) or there is a bug.
Thanks for insisting. Now I can reproduce it. When I tried it yesterday,
something must have been different so that it went through without
problem. The problem seems to be that the value of
sage.ext.multi_modular.MAX_MODULUS has increased a few versions ago
(perhaps between 5.9 and 6?), in combination with the following
inconsistency:
sage: x, y = ZZ['x','y'].gens()
sage: GF(1091)['x','y'].random_element().degree(x) ### works
sage: GF(3037000453)['x','y'].random_element().degree(x) ### fails
Perhaps this should be fixed in the code of multivariate polynomial rings
rather than by a workaround in nullspace.py?
@kcrisman: thanks for the pointer to the documentation. I will include
self-testing routines in future versions.
--
Ticket URL: <http://trac.sagemath.org/ticket/17205#comment:16>
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