#10140: Base sage.geometry.cone on the Parma Polyhedra Library (PPL)
-------------------------------------+--------------------------------------
   Reporter:  vbraun                 |       Owner:  mhampton  
       Type:  enhancement            |      Status:  needs_work
   Priority:  major                  |   Milestone:  sage-4.7  
  Component:  geometry               |    Keywords:  ppl       
     Author:  Volker Braun           |    Upstream:  N/A       
   Reviewer:  Andrey Novoseltsev     |      Merged:            
Work_issues:  intersect sublattices  |  
-------------------------------------+--------------------------------------

Comment(by vbraun):

 Sounds good. I don't remember why I added
 `rays[0].parent().ambient_module()` but I'm pretty sure you'll find out
 when you run the doctests.

 I don't know any place where we actually use intersections of cones in
 different sublattices. I would be fine with leaving this `NotImplemented`.

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10140#comment:43>
Sage <http://www.sagemath.org>
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