#4965: [with patch, needs work] Z/nZ[x] via FLINT's zmod_poly
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Reporter: malb | Owner: somebody
Type: defect | Status: new
Priority: major | Milestone: sage-3.4
Component: basic arithmetic | Resolution:
Keywords: |
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Comment (by cremona):
Here's what is causing the problem in the ell_number_field.py test:
If F is a field of 3 elements, b=F(0), then b.nth_root(0) gives an error:
{{{
sage: K.<a>=NumberField(x^2-x+3)
sage: F=K.residue_field(a); F; F.order()
Residue field of Fractional ideal (a)
3
sage: b=F(0); b
0
sage: b.nth_root(3)
ValueError: factorization of 0 not defined
}}}
The nth_root() function being called here is at fault, but that's as far
as I got.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4965#comment:12>
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