#20154: train-tracks
-------------------------------------+-------------------------------------
       Reporter:  dbenielli          |        Owner:
           Type:  task               |       Status:  needs_review
       Priority:  major              |    Milestone:  sage-7.3
      Component:  group theory       |   Resolution:
       Keywords:  free-group         |    Merged in:
  automorphism                       |
        Authors:  Dominique          |    Reviewers:
  Benielli, Thierry Coulbois         |
Report Upstream:  N/A                |  Work issues:
         Branch:  public/train-      |       Commit:
  track                              |  d35c1d2fcbb626332e8ad15a1fc98441edb4b0aa
   Dependencies:                     |     Stopgaps:
-------------------------------------+-------------------------------------

Comment (by coulbois):

 No problem for the order of the generators and their inverses. However the
 reason for rewriting the _cmp_ method was that I want the neutral element
 to be smaller than all other elements of the free group. Which was not the
 case with the previous version.

 I do not know how the previous order was implemented (deep inside GAP ?)

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