A Tamari lattice is a poset of a type of this structure ordered with rotations, and the isometry of 
A Tamari lattice is a poset of a type of this structure ordered with rotations, and the isometry of the AA variety of these structures is the 2-3 type. Lookup takes O (log n) ("Big O of log n") time in the AVL type, which is similar to a variety in which each vertex is painted one of two colors. If h is the height, at most two to the h \+ 1th power minus 1 nodes are contained in the binary type of this structure, and in the red-black variety, black is the default color of the root node. For 10 points, name this hierarchical data structure whose childless nodes are known as leaf nodes, as opposed to branch nodes.
A Tamari lattice is a poset of a type of this structure ordered with rotations, and the isometry of the AA variety of these structures is the 2-3 type.
{tree} [accept {binary tree} before mention]