#10910: Avoid nfinit while factoring polynomials
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Reporter: lftabera | Owner: tbd
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-4.7.1
Component: factorization | Keywords: factorization, pari, nfinit,
number field
Work_issues: | Upstream: N/A
Reviewer: | Author: Luis Felipe Tabera Alonso
Merged: | Dependencies:
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Comment(by lftabera):
Just for the record, my patch introduces the following problem, so I need
to add a doctest to it since it is an unapparent side effect.
{{{
sage: N = NumberField(x^3-2*x+3,'a')
sage: f = N[x](x^2-41943301)
sage: M = N.extension(f,'b')
sage: M.hom([M.gen()])
...
ValueError: no way to map base field to codomain.
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10910#comment:5>
Sage <http://www.sagemath.org>
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