#15303: Coercion discovery fails to be transitive
-------------------------------------+-------------------------------------
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
Branch: | permgroup.py; rebase
u/SimonKing/ticket/15303 | Commit:
Dependencies: #14711, #15329, | 807550bbc45e9872ac365fc98b817ccd5bcfbb95
#15331 | Stopgaps:
-------------------------------------+-------------------------------------
Changes (by SimonKing):
* commit: b9ebe8118451ec1f4df2c3c9714c95138d7615bd =>
807550bbc45e9872ac365fc98b817ccd5bcfbb95
* dependencies: #14711 #15329 #15331 => #14711, #15329, #15331
Comment:
Last 10 new commits:
||[changeset:807550b]||Fix some tests by taking *copies* of coerce maps||
||[changeset:1db6444]||Copy some coerce maps in doctests. Use default
conversion to coerce ZZ into QQbar||
||[changeset:810fad8]||_coerce_map_from_ shouldn't return default
conversion maps.||
||[changeset:d46cb9c]||Use registered coercions *and* embeddings for
backtracking, but prefer the former.||
||[changeset:a04b480]||Increase coerce cache version in
Morphism.register_as_coercion()||
||[changeset:1beac71]||Give user-provided coerce maps the same priority
than to a coerce map found by backtracking||
||[changeset:bae64c4]||Store a version number for the coercion cache,
depending on the registered embeddings||
||[changeset:7385549]||Use registered embeddings for backtracking in the
coercion model||
||[changeset:40c787d]||Merge branch 'ticket/15331' into ticket/15303||
||[changeset:29ab8ee]||Merge branch 'ticket/15329' into ticket/15303||
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Ticket URL: <http://trac.sagemath.org/ticket/15303#comment:84>
Sage <http://www.sagemath.org>
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