ABSTRACT
T2-Separation Axiom Given any two distinct points x, y , there exist neighborhoods u and v of x and y , respectively, with uS v¥: It then follows that finite SUBSETS are CLOSED.
See also CLOSURE (SET)
Tableau YOUNG TABLEAU
Tableau Class When a YOUNG TABLEAU is constructed using the socalled insertion algorithm, an element starts in some position on the first row, from which it may later be bumped. In contrast, the elements that start out in the ith column are said to belong to the ith class (Skiena 1990, p. 73). Tableau classes may be computed using TableauClasses[p ] in the Mathematica add-on package DiscreteMath‘Combinatorica‘ (which can be loaded with the command BBDiscreteMath‘).
