#11368: can't coerce pari to rational function field
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Reporter: katestange | Owner: robertwb
Type: defect | Status: new
Priority: minor | Milestone: sage-4.7.1
Component: coercion | Keywords: coercion pari rational
fraction_field
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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The following fails
{{{
sage: R.<x,y> = PolynomialRing(QQ)
sage: S = R.fraction_field()
sage: S(pari((x+y)/y))
TypeError: no canonical coercion from Fraction Field of Multivariate
Polynomial Ring in x, y over Rational Field to Rational Field
}}}
However, if you replace (x+y)/y with x+y, it works (in other words,
polynomials work but rational functions don't).
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11368>
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