#18251: CombinatorialFreeModule should use coercion for comparisons
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Reporter: tscrim | Owner: tscrim
Type: defect | Status: new
Priority: critical | Milestone: sage-6.7
Component: coercion | Resolution:
Keywords: zero | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Changes (by jdemeyer):
* cc: chapoton (added)
Old description:
> Currently we have the following in Sage:
> {{{
> sage: C = CombinatorialFreeModule(QQ, ['a','b'])
> sage: C.zero() == ZZ(0)
> True
> sage: C.zero() == QQ(0)
> False
> }}}
New description:
Currently we have the following in Sage:
{{{
sage: C = CombinatorialFreeModule(QQ, ['a','b'])
sage: C.zero() == ZZ(0)
True
sage: C.zero() == QQ(0)
False
}}}
This should be fixed by using coercing comparison (`_cmp_` or
`_richcmp_`).
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Ticket URL: <https://trac.sagemath.org/ticket/18251#comment:2>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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