#5969: implement computation of rational cuspidal subgroups of modular abelian
varieties
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   Reporter:  was            |       Owner:  was         
       Type:  enhancement    |      Status:  needs_review
   Priority:  major          |   Milestone:  sage-4.4    
  Component:  number theory  |    Keywords:              
     Author:  William Stein  |    Upstream:  N/A         
   Reviewer:  Alex Ghitza    |      Merged:              
Work_issues:                 |  
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Changes (by was):

  * status:  needs_work => needs_review


Comment:

 It turns out that part 2 fixes a *MAJOR* bug in SNF for matrices over ZZ
 in an edge case.  The doctest in finitely generated modules was just wrong
 (ouch).    I carefully checked through this with Robert Bradshaw, and
 posted a patch that updates the doctest.

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/5969#comment:5>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
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