#11780: Creating a polynomial ring over a number field results in a non-unique
polynomial ring over the rationals
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Reporter: SimonKing | Owner: robertwb
Type: defect | Status: needs_review
Priority: major | Milestone: sage-4.7.2
Component: coercion | Keywords: non-unique polynomial ring number
field
Work_issues: | Upstream: N/A
Reviewer: | Author: Simon King
Merged: | Dependencies:
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Comment(by SimonKing):
Replying to [comment:6 malb]:
> Doctests pass. However, I gave the !TypeError thing another thought. If
somebody changes the class for polynomials over the base field (prime
field or rational field), couldn't that again lead to problems with non-
identical parents? I.e. should we cause the !TypeError such that future
developers will note there's a potential problem?
Sorry, I saw your answer only now.
Yes, on second thought, it seems reasonable to not catch the type error.
I am sorry that our messages crossed (I have updated my patch, it now
contains a second fix and one doctest). I will remove catching the type
error in a minute.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11780#comment:8>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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