#17974: Fix conversion from PARI to multivariate polynomial rings
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Reporter: pbruin | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.6
Component: algebra | Keywords: multivariate polynomials pari
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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Conversion of multivariate polynomials from PARI does not always work:
{{{
sage: A.<a> = PolynomialRing(QQ)
sage: B.<d,e> = PolynomialRing(A)
sage: f = pari(a*d)
sage: B(f)
Traceback (most recent call last):
...
TypeError: Unable to coerce PARI d to an Integer
}}}
A similar example:
{{{
sage: A.<a,b> = PolynomialRing(QQ)
sage: B.<d,e> = PolynomialRing(A)
sage: f = pari(a*d)
sage: B(f)
Traceback (most recent call last):
...
TypeError: Could not find a mapping of the passed element to this ring.
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/17974>
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