#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 | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Comment (by zimmerma):
here is another example:
{{{
sage: R.<x,t> = GF(2)[]
sage: f=x^6 + (t^5 + t^2)*x + t^5 + t^4 + t^3 + 1
sage: factor(f,proof=False)
x^6 + x*t^5 + t^5 + t^4 + x*t^2 + t^3 + 1
sage: f % (x+t+1)
0
}}}
Note that the factorization algorithm seems not to be deterministic, thus
some times the
factorization is correct.
Paul
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12928#comment:2>
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