#17768: Morphism.is_identity() assumes a Morphism is determined by its action on
gens()
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Reporter: mmezzarobba | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.5
Component: algebra | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Description changed by mmezzarobba:
Old description:
> Counterexample:
> {{{
> sage: from sage.categories.morphism import SetMorphism
> sage: f = SetMorphism(Hom(QQ, QQ, Sets()), numerator)
> sage: f.is_identity()
> True
> }}}
> See also #15478.
New description:
Counterexample:
{{{
sage: from sage.categories.morphism import SetMorphism
sage: f = SetMorphism(Hom(QQ, QQ, Sets()), numerator)
sage: f.is_identity()
True
}}}
See also #15478, #15481.
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Ticket URL: <http://trac.sagemath.org/ticket/17768#comment:1>
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