#11444: optional package cbc-2.3.p2.spkg does not build on some platforms on
sage-4.7.1.alpha1
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   Reporter:  mariah             |          Owner:  tbd       
       Type:  defect             |         Status:  new       
   Priority:  minor              |      Milestone:  sage-4.7.2
  Component:  optional packages  |       Keywords:  sd32      
Work_issues:                     |       Upstream:  N/A       
   Reviewer:                     |         Author:            
     Merged:                     |   Dependencies:            
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Comment(by ncohen):

 > Is there no way to generate a "canonical" answer from both packages?
 (Does that even make sense mathematically? I'm not familiar with the gale
 ryser theorem.) If not, I agree with Nathann.

 Not that I know. When I write doctests using LP, I try to find examples
 for which the solution is unique, but there are many matrices solving the
 gale-ryser proble (ryser's algorithm even lets one enumerate them), and
 the solvers have no reason to return one rather than the other. Adding a
 fake objective functions to make the answer unique on the same problem
 would touch the running time just to make the doctests easier to write,
 which clearly isn't a good idea :-D

 Nathann

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11444#comment:7>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
and MATLAB

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