#13077: generalised Tamari lattices
-------------------------------------+--------------------------------------
Reporter: chapoton | Owner: sage-combinat
Type: enhancement | Status: needs_review
Priority: minor | Milestone: sage-5.6
Component: combinatorics | Resolution:
Keywords: poset | Work issues:
Report Upstream: N/A | Reviewers:
Authors: Frédéric Chapoton | Merged in:
Dependencies: | Stopgaps:
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Old description:
> The Tamari lattice is a partial order on planar binary trees or Dyck
> paths.
>
> (see [http://en.wikipedia.org/wiki/Tamari_lattice Tamari Lattice] in
> Wikipedia)
>
> It has been generalized recently by F. Bergeron and his collaborators.
>
> The patch below implements these lattices, and even more general
> versions.
New description:
The Tamari lattice is a partial order on planar binary trees or Dyck
paths.
(see [http://en.wikipedia.org/wiki/Tamari_lattice Tamari Lattice] in
Wikipedia)
It has been generalized recently by F. Bergeron and his collaborators.
The patch below implements these lattices, and even more general versions.
apply trac_13077_tamari_posets-fc.patch
--
Comment (by chapoton):
I have replaced generalised by generalized
I have added a note on the conjectural status of lattice property
apply trac_13077_tamari_posets-fc.patch
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13077#comment:13>
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