#17367: Classes of combinatorial structures
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       Reporter:  elixyre            |        Owner:
           Type:  enhancement        |       Status:  needs_review
       Priority:  major              |    Milestone:  sage-6.5
      Component:  combinatorics      |   Resolution:
       Keywords:                     |    Merged in:
        Authors:  Jean-Baptiste      |    Reviewers:
  Priez                              |  Work issues:
Report Upstream:  N/A                |       Commit:
         Branch:                     |  6771a334eac5460c5d193f58f28ea7fbc782189c
  u/elixyre/class_of_combinatorial_structures|     Stopgaps:
   Dependencies:                     |
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Comment (by alauve):

 Great ideas. (I prefer to keep "combinatorial' out of the name, if
 possible.)

 For the record, we're talking about **enumeratable** sets, right?

 Set partitions, etc., may be enumeratable, but I don't want to specify an
 enumeration (i.e., make it into an enumerated set) if I don't have to....
 Or maybe I should?
 (This would certainly be necessary if I planned to identify bases of
 homogeneous graded slices of a Hopf algebra with QQ^n^ for some n, but
 aside from that, I don't know that I'd want to specify an enumeration.)

--
Ticket URL: <http://trac.sagemath.org/ticket/17367#comment:13>
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