#15635: free Pre-Lie algebras
-------------------------------------+-------------------------------------
       Reporter:  chapoton           |        Owner:
           Type:  enhancement        |       Status:  needs_review
       Priority:  major              |    Milestone:  sage-6.7
      Component:  combinatorics      |   Resolution:
       Keywords:  trees, prelie      |    Merged in:
  algebra                            |    Reviewers:
        Authors:  Frédéric Chapoton  |  Work issues:  coercion
Report Upstream:  N/A                |       Commit:
         Branch:  u/chapoton/15635   |  c42ba5a40ebc5b6dc5709aa6046ffcc066c24d18
   Dependencies:  #11529             |     Stopgaps:
-------------------------------------+-------------------------------------

Comment (by chapoton):

 Thanks Travis for your comments. I have done something for the first
 three, but I do not
 understand the last one.

 I removed the shortcut `<` alltogether. Using `*` is almost as good.

 I removed `coerced_impl` and it still works.

 I used `len(self.algebra_generators())`.

--
Ticket URL: <http://trac.sagemath.org/ticket/15635#comment:29>
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