#20631: Support more variable names in Polynomial_rational_flint
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Reporter: pbruin | Owner:
Type: defect | Status: new
Priority: minor | Milestone: sage-7.3
Component: algebra | Resolution:
Keywords: galois pari | Merged in:
Authors: Peter Bruin | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: #20630 | Stopgaps:
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Changes (by pbruin):
* dependencies: => #20630
Old description:
> After #20630, the following no longer crashes, but still raises an error:
> {{{
> sage: R.<theta> = QQ[]
> sage: (theta^2 + 1).galois_group(pari_group=True)
> ...
> PariError: theta already exists with incompatible valence
> }}}
New description:
After #20630, the following no longer crashes, but still raises an error:
{{{
sage: R.<theta> = QQ[]
sage: (theta^2 + 1).galois_group(pari_group=True)
...
PariError: theta already exists with incompatible valence
}}}
Several methods in `Polynomial_rational_flint()` have the same problem.
We solve this by using the variable name `x` instead of the Sage variable
name when converting to a PARI polynomial.
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Ticket URL: <http://trac.sagemath.org/ticket/20631#comment:1>
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