#10963: Axioms and more functorial constructions
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Reporter: nthiery | Owner: stumpc5
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.2
Component: categories | Resolution:
Keywords: days54 | Merged in:
Authors: Nicolas M. Thiéry | Reviewers: Simon King, Frédéric
Report Upstream: N/A | Chapoton
Branch: | Work issues: To be merged
public/ticket/10963-doc- | simultaneously with #15801
distributive | Commit:
Dependencies: #11224, #8327, | f7e1a6bba29372bd197de88c9db3a6e866b001a2
#10193, #12895, #14516, #14722, | Stopgaps:
#13589, #14471, #15069, #15094, |
#11688, #13394, #15150, #15506, |
#15757, #15759, #16244 |
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Comment (by darij):
Nicolas: Thanks for this and sorry for not noticing the ridiculous
an_example method myself! I've pushed a response commit. I am still not
happy with your edit on the graded issue because it feels like you are
trying to brush the actual bug under the rug. The current use of `dual` is
*wrong* and an abuse of functorial construction; as you have seen by my
comment, it caused me to misunderstand things. It will have to be fixed
(`Algebras().Duals()` will no longer be `Coalgebras()`, and the duals of
combinatorial Hopf algebras will be called using `graded_dual()`), but for
now it really ought to have big red warning signs around it.
--
Ticket URL: <http://trac.sagemath.org/ticket/10963#comment:679>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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