#10963: More functorial constructions
-------------------------+-------------------------------------------------
       Reporter:         |         Owner:  stumpc5
  nthiery                |        Status:  needs_work
           Type:         |     Milestone:
  enhancement            |    Resolution:
       Priority:  major  |     Merged in:
      Component:         |     Reviewers:  Simon King
  categories             |   Work issues:  Reduce startup time by 5%. Avoid
       Keywords:         |  "recursion depth exceeded (ignored)". Trivial
        Authors:         |  doctest fixes.
  Nicolas M. ThiƩry      |  Dependencies:  #11224, #8327, #10193, #12895,
Report Upstream:  N/A    |  #14516, #14722, #13589
         Branch:         |
       Stopgaps:         |
-------------------------+-------------------------------------------------

Comment (by nthiery):

 Replying to [comment:66 SimonKing]:
 > You're right. But I think this has been the *only* exception.

 And this still is the only exception: {{{Rings().Commutative().Finite()}}}
 is a join category.
 {{{
 sage: type(Rings().Finite().Commutative())
 <class 'sage.categories.category.JoinCategory_with_category'>
 }}}

--
Ticket URL: <http://trac.sagemath.org/ticket/10963#comment:69>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
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