#15303: Coercion discovery fails to be transitive
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Reporter: nbruin | Owner:
Type: defect | Status: needs_work
Priority: major | Milestone: sage-5.13
Component: coercion | Resolution:
Keywords: | Merged in:
Authors: Simon King | Reviewers:
Report Upstream: N/A | Work issues: Crash in permgroup.py
Branch: | Commit:
u/SimonKing/ticket/15303 | f8f79b8d0e3f42b418703f094d7eb1dd3ff905e8
Dependencies: #14711 | Stopgaps:
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Comment (by SimonKing):
The new commit changes `CompletionFunctor.commutes(..)`, so that the
completion functor only commutes with the `FractionField`, but not with
other `CompletionFunctor`s (this is because other completion functors have
already been taken care of by `CompletionFunctor.merge(..)`).
Also, it changes `_coerce_map_from_` of number fields according to the
previous changes in `EmbeddedNumberFieldMorphism`.
With the current commit, all tests in `sage/rings/number_field/` pass.
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Ticket URL: <http://trac.sagemath.org/ticket/15303#comment:78>
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