#19538: Fix LaurentPolynomialRing coercion issues
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Reporter: | Owner:
etn40ff | Status: needs_review
Type: | Milestone: sage-6.10
defect | Resolution:
Priority: major | Merged in:
Component: | Reviewers:
algebra | Work issues:
Keywords: | Commit:
Authors: | 76ac4339b195762106d406516400f8468de844ef
Salvatore Stella | Stopgaps:
Report Upstream: N/A |
Branch: |
u/etn40ff/19358 |
Dependencies: |
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Comment (by etn40ff):
I am not really happy about the formulation of rule 2. What I mean by this
is
that I find this example extremely confusing because it maps {{{y}}} to
{{{x}}}
and {{{t}}} to {{{y}}}
{{{
sage: R1 = PolynomialRing(ZZ, 'x,y')
sage: R5 = PolynomialRing(ZZ, 'y,t')
sage: map(R1, R5.gens()) # rule 2
[x, y]
}}}
What is the rationale behind it?
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Ticket URL: <http://trac.sagemath.org/ticket/19538#comment:10>
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