Resume

DescripciónTamari lattice.svg	English: The Hasse diagram of a Tamari lattice. Français : Le diagramme de Hasse d'un treillis de Tamari
Data	22 de payares de 2008
Fonte	Trabayu propiu
Autor	David Eppstein
Permisu (Cómo reutilizar esti ficheru)	Public domainPublic domainfalsefalse Yo, el titular de los drechos d'autor d'esta obra, la llibero como dominiu públicu. Esto s'aplica nel mundu ensembre. En dellos países seique esto nun seya posible llegalmente; nesti casu: Doi a cualesquier persona permisu pa usar esta obra pa cualesquier propósitu, ensin denguna condición, menos si eses condiciones requierense pola llei.

Overview

The associahedron K5 has C₄ = 14 vertices, 21 edges and T₄−1 = 9 faces.
Each one of the faces corresponds to a 2-subset of {1,2,3,4,5} except {1,5}. Faces whose 2-subsets overlap do not touch.
(Overlap would mean that an element in one set is between the elements of the other, like with {1,3} and {2,4}.)
An edge or vertex corresponds to a set that contains the 2-subsets of the faces that meet in this edge or vertex.

	Triangulated hexagons	Binary trees	Sets of 2-subsets	Ovals	Parentheses
Vertices (and edges)
Faces