#11981: map_coefficients (of multivariate polynomial ring) cannot change
base_ring
---------------------------+------------------------------------------------
Reporter: dkrenn | Owner: AlexGhitza
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-4.7.2
Component: algebra | Keywords: map coefficients, multivariate
polynomial ring, base ring
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
---------------------------+------------------------------------------------
Changes (by dkrenn):
* status: new => needs_review
Comment:
Now there is an additional parameter. If given, then the base ring of the
polynomial ring is changed.
Example from above continued:
{{{
sage: f.map_coefficients(h,S)
(-s^3 - s^2 + 1)*X + Y
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11981#comment:1>
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