#16399: Matrix stack doesn't coerce to a common parent
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Reporter: tscrim | Owner: tscrim
Type: defect | Status: new
Priority: major | Milestone: sage-6.3
Component: coercion | Resolution:
Keywords: matrix stack | Merged in:
coercion | Reviewers:
Authors: | Work issues:
Report Upstream: N/A | Commit:
Branch: u/chapoton/16399 | 098d574aa98441e4067178a4b8913c88ebc0f6b8
Dependencies: | Stopgaps:
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Comment (by tscrim):
Here's how to get a common parent:
{{{
sage: from sage.structure.element import get_coercion_model
sage: CM = get_coercion_model()
sage: CM.common_parent(QQ, ZZ['x'])
Univariate Polynomial Ring in x over Rational Field
}}}
and since we're modifying cython files, we could probably use the cdef
global coercion model from element.pyx:
{{{
cdef CoercionModel coercion_model
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/16399#comment:2>
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