#19016: Better hash for Element
-------------------------------------+-------------------------------------
Reporter: ncohen | Owner:
Type: defect | Status: needs_work
Priority: blocker | Milestone: sage-6.9
Component: misc | Resolution:
Keywords: | Merged in:
Authors: Nils Bruin, | Reviewers:
Vincent Delecroix | Work issues:
Report Upstream: N/A | Commit:
Branch: public/19016 | a0f830bf8dc0cbdeb75e45ee7bfee7b4fad33768
Dependencies: #18246 | Stopgaps:
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Comment (by vdelecroix):
The failing doctest in `parent.pyx` is very weird! The doctest expected a
coercion
{{{
(matrix space over QQ, number field K) -> (matrix space over QQ)
}}}
but now it is
{{{
(matrix space over QQ, number field K) -> (matrix space over K)
}}}
The reason is that before we had (keeping the notation from the failing
doctest)
{{{
sage: ma = a.matrix()
sage: cm = get_coercion_model()
sage: cm.get_action(ma.parent(), b.parent(), operator.mul, ma, b) is None
True
}}}
but with the patch applied
{{{
sage: cm.get_action(ma.parent(), b.parent(), operator.mul)
Right scalar multiplication by Number Field in b241562 with
defining polynomial x^2 + 272118 on Full MatrixSpace of
2 by 2 dense matrices over Rational Field
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/19016#comment:70>
Sage <http://www.sagemath.org>
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