#10963: More functorial constructions
-------------------------------------+-------------------------------------
Reporter: nthiery | Owner: stumpc5
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.1
Component: categories | Resolution:
Keywords: days54 | Merged in:
Authors: Nicolas M. Thiéry | Reviewers: Simon King, Frédéric
Report Upstream: N/A | Chapoton
Branch: | Work issues:
public/ticket/10963 | Commit:
Dependencies: #11224, #8327, | 478de48553d203516cddb47e0cb89c34ccc210ee
#10193, #12895, #14516, #14722, | Stopgaps:
#13589, #14471, #15069, #15094, |
#11688, #13394, #15150, #15506 |
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Comment (by darij):
Also, I suspect this to be a typo:
{{{
+ class Unital(CategoryWithAxiom):
+
+ class SubcategoryMethods:
+
+ @cached_method
+ def Inverse(self):
+ r"""
+ Returns the full subcategory of the unital objects of ``self``.
+
+ EXAMPLES::
+
+ sage: Magmas().Unital().Inverse()
+ Category of inverse unital magmas
+ sage: Monoids().Inverse()
+ Category of groups
}}}
Should be the full subcategory of the *inverse*, not the unital, objects
of self.
--
Ticket URL: <http://trac.sagemath.org/ticket/10963#comment:325>
Sage <http://www.sagemath.org>
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