#14146: Warn when creating number fields with non-monic-integral polynomials
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Reporter: Bouillaguet |
Owner: davidloeffler
Type: defect |
Status: needs_review
Priority: major |
Milestone: sage-5.9
Component: number fields |
Resolution:
Keywords: pari, number field, monic, integral, integer | Work
issues:
Report Upstream: N/A |
Reviewers: Marco Streng
Authors: Charles Bouillaguet | Merged
in:
Dependencies: |
Stopgaps:
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Old description:
> Add warnings for the problem at #252.
New description:
Add warnings for the problem at #252.
Apply:
* [attachment:14146_number_fields.patch]
* [attachment:14146_reviewer.patch]
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Comment (by mstreng):
I did some of the corrections myself that I did not get an answer to:
* "..." instead of a doctest number
* `NotImplementedError`, because it is more appropriate than `ValueError`
and also more in line with the absolute case
* import `warn` more directly
However, I still don't understand why I get the warning printed twice:
{{{
sage: k.<a> = NumberField(x^2+1)
sage: l.<b> = k.extension(x^3-1/2)
/sage-5.6/local/lib/python2.7/site-
packages/sage/rings/number_field/number_field_rel.py:307: UserWarning:
PARI only handles integral absolute polynomials. Computations in this
field might trigger PARI errors. See
http://trac.sagemath.org/sage_trac/ticket/252
warn("PARI only handles integral absolute polynomials. Computations in
this field might trigger PARI errors. See
http://trac.sagemath.org/sage_trac/ticket/252";)
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14146#comment:15>
Sage <http://www.sagemath.org>
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