#14793: Unique representation for homsets
-------------------------------+--------------------------------------------
       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:           
-------------------------------+--------------------------------------------

Comment (by SimonKing):

 I have attached an experimental patch that implements the new suggestion.
 With it, the only error in sage.modular is:
 {{{
 sage -t sage/modular/abvar/homspace.py  # 1 doctest failed
 }}}
 which is some automatic test suite.

 The situation in sage.schemes is still not good, as we get:
 {{{
 sage -t sage/schemes/elliptic_curves/ell_curve_isogeny.py  # 8 doctests
 failed
 sage -t sage/schemes/elliptic_curves/ell_point.py  # 8 doctests failed
 sage -t sage/schemes/elliptic_curves/ell_finite_field.py  # 1 doctest
 failed
 sage -t sage/schemes/elliptic_curves/isogeny_class.py  # 1 doctest failed
 sage -t sage/schemes/projective/projective_space.py  # 2 doctests failed
 sage -t sage/schemes/affine/affine_space.py  # 1 doctest failed
 sage -t sage/schemes/generic/homset.py  # 1 doctest failed
 }}}

 If we are lucky, this boils down to an improper initialisation of the
 category of some schemes.

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14793#comment:24>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
and MATLAB

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