#11829: multivariate factorization over finite fields
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Reporter: zimmerma | Owner: tbd
Type: defect | Status: needs_info
Priority: major | Milestone: sage-4.7.2
Component: factorization | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author: Martin Albrecht
Merged: | Dependencies:
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Changes (by malb):
* status: needs_review => needs_info
Comment:
Hi Paul,
a multivariate polynomial ring over GF(next_prime(2^29^)) uses
libSingular, i.e., Singular via a Cython interface; while a multivariate
polynomial ring over GF(previous_prime(2^31^)) uses the generic polynomial
implementation in Sage. We followed the Singular manual for the maximum
prime allowed (which is 2147483629 < previous_prime(2^31^)), while we
apparently don't follow it when converting generic polynomials to Singular
via the pexpect interface.
I think this is actually a bug and the Singular developers meant
previous_prime(2^31^) when they chose a limit.
I asked: http://groups.google.com/group/libsingular-
devel/browse_thread/thread/885b21e6f8039cc
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11829#comment:5>
Sage <http://www.sagemath.org>
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