#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):
Some thoughts:
- Another plus of my suggestion is that it would encourage people to
''properly'' initialise the category (since otherwise X.__class__ would
not be a subclass of the category's parent class).
- The negative of my suggestion: If one programs in Cython, then
`X.__class__` will not become a sub-class of the category's parent class,
even if initialisation of the category was done properly.
- The positive in the negative of my suggestion: If one programs in
Cython, then the problem is not relevant anyway. The problem I'm
addressing will only appear if one relies on Python's way of pickling,
without implementing `__reduce__`.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14793#comment:23>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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