#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                                   |      
Stopgaps:              
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Comment (by mmarco):

 Wow, thanks for the great work. I will try to go through the braid code
 following your steps.

 I have an issue thoough. I don't know which patch is exactly to blame, but
 the documentation does not build:

 {{{
 mmarco@neumann ~/sage-5.5.beta0 $ ./sage -docbuild reference html
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 gap: halving pool size.
 Traceback (most recent call last):
   File "/home/mmarco/sage-5.5.beta0/devel/sage/doc/common/builder.py",
 line 1083, in <module>
     getattr(get_builder(name), type)()
   File "/home/mmarco/sage-5.5.beta0/devel/sage/doc/common/builder.py",
 line 347, in _wrapper
     self.write_auto_rest_file(module_name)
   File "/home/mmarco/sage-5.5.beta0/devel/sage/doc/common/builder.py",
 line 606, in write_auto_rest_file
     title = self.get_module_docstring_title(module_name)
   File "/home/mmarco/sage-5.5.beta0/devel/sage/doc/common/builder.py",
 line 564, in get_module_docstring_title
     __import__(module_name)
   File "/home/mmarco/sage-5.5.beta0/local/lib/python2.7/site-
 packages/sage/groups/braid.py", line 446, in <module>
     class BraidGroup(FinitelyPresentedGroup):
 NameError: name 'FinitelyPresentedGroup' is not defined
 }}}

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12339#comment:56>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
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