#14014: Update matrix groups to new Parents, libGAP.
----------------------------------+-----------------------------------------
       Reporter:  vbraun          |         Owner:  joyner      
           Type:  enhancement     |        Status:  needs_review
       Priority:  major           |     Milestone:  sage-5.9    
      Component:  group theory    |    Resolution:              
       Keywords:                  |   Work issues:              
Report Upstream:  N/A             |     Reviewers:  David Roe   
        Authors:  Volker Braun    |     Merged in:              
   Dependencies:  #14187, #14323  |      Stopgaps:              
----------------------------------+-----------------------------------------

Comment (by dimpase):

 There are also doctest failures in `sage/categories/groups.py`,
 `sage/combinat/backtrack.py`, `sage/combinat/partition.py`. Did you look
 at these?


 In `sage/combinat/root_system/weyl_group.py`. In the latter the fix is
 trivial: replace [] by ():
 {{{
 sage -t --long devel/sage/sage/combinat/root_system/weyl_group.py
 **********************************************************************
 File "devel/sage/sage/combinat/root_system/weyl_group.py", line 311, in
 sage.combinat.root_system.weyl_group.WeylGroup.gens
 Failed example:
     G.gens()
 Expected:
     [
     [0 1 0 0]  [1 0 0 0]  [1 0 0 0]
     [1 0 0 0]  [0 0 1 0]  [0 1 0 0]
     [0 0 1 0]  [0 1 0 0]  [0 0 0 1]
     [0 0 0 1], [0 0 0 1], [0 0 1 0]
     ]
 Got:
     (
     [0 1 0 0]  [1 0 0 0]  [1 0 0 0]
     [1 0 0 0]  [0 0 1 0]  [0 1 0 0]
     [0 0 1 0]  [0 1 0 0]  [0 0 0 1]
     [0 0 0 1], [0 0 0 1], [0 0 1 0]
     )
 }}}

 Also `devel/sage/sage/libs/gap/libgap.pyx` (forgot to lazify):
 {{{
 sage -t --long devel/sage/sage/libs/gap/libgap.pyx
 **********************************************************************
 File "devel/sage/sage/libs/gap/libgap.pyx", line 460, in
 sage.libs.gap.libgap.Gap.__init__
 Failed example:
     type(libgap)
 Expected:
     <class 'sage.libs.gap.libgap.Gap'>
 Got:
     <type 'sage.misc.lazy_import.LazyImport'>
 }}}
 And a number of similar failures in
 `devel/sage/sage/misc/lazy_import.pyx`.

 I also get timeouts in `sage/sage/combinat/backtrack.py` and
 `sage/modular/arithgroup/arithgroup_perm.py`.

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14014#comment:23>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
and MATLAB

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