#17554: Unable to substitute univariant Laurent polynomial into usual polynomial
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Reporter: tscrim | Owner: tscrim
Type: defect | Status: new
Priority: major | Milestone: sage-6.5
Component: | Keywords: Laurent polynomial,
commutative algebra | substitution
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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We can do
{{{
sage: R.<q> = QQ[]
sage: p = q^4 + q^2 - 2*q + 3
sage: L.<x,y> = LaurentPolynomialRing(QQ)
sage: p(q=x)
x^4 + x^2 - 2*x + 3
}}}
but if we change things to a univariate Laurent polynomial ring, we get:
{{{
sage: L.<x> = LaurentPolynomialRing(QQ)
sage: p(q=x)
...
IndexError: tuple index out of range
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/17554>
Sage <http://www.sagemath.org>
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