#15683: Interval-posets of Tamari
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       Reporter:  VivianePons        |        Owner:
           Type:  enhancement        |       Status:  needs_review
       Priority:  major              |    Milestone:  sage-6.2
      Component:  combinatorics      |   Resolution:
       Keywords:  combinat, Tamari,  |    Merged in:
  binary trees, Dyck paths           |    Reviewers:
        Authors:  Viviane Pons       |  Work issues:  make import lazy,
Report Upstream:  N/A                |  review
         Branch:  public/combinat    |       Commit:
  /interval-posets-15683             |  4dc7f4d884b6f3a87e3c4273faa614bf6aa353a9
   Dependencies:                     |     Stopgaps:
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Comment (by darij):

 I've done some more edits.

 Viviane or Frederic, before I move on, can you confirm to me that the
 relation between Tamari interval-posets and Tamari intervals is precisely
 what I've written? (I'm specifically unsure of the "preimage" statement,
 which doesn't seem to be stated anywhere explicitly -- it's a stronger
 assertion than that the binary trees of these linear extensions form a
 Tamari interval.) Also, I hope my "complement" doesn't conflict with your
 notation.

--
Ticket URL: <http://trac.sagemath.org/ticket/15683#comment:25>
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