#15061: Pari can't handle all polynomial resultants
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Reporter: robharron | Owner:
Type: defect | Status:
Priority: major | needs_info
Component: algebra | Milestone: sage-6.2
Keywords: pari, resultant, sylvester | Resolution:
matrix | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by gagern):
Replying to [comment:8 pbruin]:
> There seems to be a different problem here, namely that the class of
that polynomial inherits from `Polynomial_singular_repr`, even though the
base field does not have a conversion to Singular.
`polynomial_element_generic.Polynomial_generic_field` inherits from
`polynomial_singular_interface.Polynomial_singular_repr`. That inheritance
was introduced in
[http://git.sagemath.org/sage.git/commit/?id=35bb3ea22b07ee4477ce70906a4aa7439cdf7bd6
35bb3ea] from 2007. Unfortunately I can't see what kind of bug this was
supposed to fix. It seems like a bad move to me, though, since that class
clearly assumes that you can convert to singular without further checks.
--
Ticket URL: <http://trac.sagemath.org/ticket/15061#comment:9>
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