#12339: Free Groups
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       Reporter:  mmarco                                          |         
Owner:  joyner      
           Type:  enhancement                                     |        
Status:  needs_work  
       Priority:  major                                           |     
Milestone:  sage-5.5    
      Component:  group theory                                    |    
Resolution:              
       Keywords:  free groups, finitely presented groups, braids  |   Work 
issues:              
Report Upstream:  N/A                                             |     
Reviewers:  Volker Braun
        Authors:  Miguel Marco                                    |     Merged 
in:              
   Dependencies:  #6391, #13687, #13588                           |      
Stopgaps:              
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Comment (by jhpalmieri):

 Replying to [comment:60 vbraun]:
 > And about Miguel's error
 >   [snip ...]
 > if you only apply trac_12339_fpgroups.3.patch: You should delete the
 file `$SAGE_ROOT//devel/sage/doc/en/reference/sage/groups/braid.rst` in
 the Sage source tree. Sphinx doesn't remove its intermediate files under
 some circumstances, breaking the docbuild if these files reference no
 longer existing modules.

 I think the issue is that line 93 of braid.py should be changed from
 {{{
 from sage.groups.finitely_presented import FinitelyPresentedGroupElement
 }}}
 to
 {{{
 from sage.groups.finitely_presented import FinitelyPresentedGroup,
 FinitelyPresentedGroupElement
 }}}

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12339#comment:67>
Sage <http://www.sagemath.org>
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