#10342: Divisor groups and cohomology rings should not make uniqueness decisions
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Reporter: novoselt | Owner: AlexGhitza
Type: defect | Status: new
Priority: major | Milestone:
Component: algebraic geometry | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by vbraun):
I don't quite understand what you want here. Divisor groups and cohomology
rings are parents for divisors and cohomology classes, respectively.
Parents should be unique, right?
The only issue is that the `Parent.scheme()` method for the underlying
scheme is misguided. You can only access an isomorphic scheme, and this
should be documented. We could change the name to `isomorphic_scheme()` or
something like this, but I don't think that would be particularly helpful.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10342#comment:1>
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