#11068: Basic implementation of one- and twosided ideals of non-commutative 
rings,
and quotients by twosided ideals
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   Reporter:  SimonKing                                          |          
Owner:  AlexGhitza                                      
       Type:  enhancement                                        |         
Status:  needs_work                                      
   Priority:  major                                              |      
Milestone:  sage-4.7.2                                      
  Component:  algebra                                            |       
Keywords:  onesided twosided ideal noncommutative ring sd32
Work_issues:  multiplication in quotient rings of matrix spaces  |       
Upstream:  N/A                                             
   Reviewer:                                                     |         
Author:  Simon King                                      
     Merged:                                                     |   
Dependencies:  #10961, #9138, #11115, #11342                   
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Comment(by john_perry):

 That wasn't smart of me. I looked at them, and they turned out to be
 numerical issues; I've seen the first reported elsewhere (0.0 v. -0.0). So
 this doesn't strike me as being caused by a change to categories & rings.
 If you want details, I'll copy them.

 I'm not done with the other architectures; I started one last night before
 leaving the office, & have another to do here at home. I hope to wrap this
 up tonight.

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11068#comment:42>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
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