#12928: critical bug in multivariate polynomial factorization over GF(2)
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Reporter: zimmerma | Owner: tbd
Type: defect | Status: new
Priority: critical | Milestone: sage-5.1
Component: factorization | Keywords:
Work issues: | Report Upstream: N/A
Reviewers: | Authors:
Merged in: | Dependencies:
Stopgaps: |
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consider the following (both with Sage 4.8 and Sage 5.0.beta13 without
{{{proof=False}}}):
{{{
sage: R.<x,y>=GF(2)[]
sage: factor(x^6 + y^6 + x^5 + x^3 + x + 1,proof=False)
x^6 + y^6 + x^5 + x^3 + x + 1
sage: (x^4+y^2*x^2+x^2+y^2*x+y^4+y^2+1)*(x^2+x+y^2+1)
x^6 + y^6 + x^5 + x^3 + x + 1
}}}
This seems to be a bug in Singular factorization. I set the priority to
"critical" since this is really a very basic routine.
Paul
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12928>
Sage <http://www.sagemath.org>
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