#14793: Unique representation for homsets
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Reporter: nthiery | Owner: nthiery
Type: enhancement | Status: new
Priority: major | Milestone: sage-5.12
Component: categories | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: Simon King | Merged in:
Dependencies: | Stopgaps:
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Comment (by SimonKing):
The only failing test of sage/modular boils down to
{{{
sage: E = J0(11).endomorphism_ring()
sage: loads(dumps(E))
}}}
where again Hom is called on a not sufficiently initialised parent.
Here, the problem is that during unpickling, `J0(11).category()` does
''not'' raise an error, but returns the category of sets, which is the
wrong to do in this situation.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14793#comment:28>
Sage <http://www.sagemath.org>
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