Alternative spelling of set theoretically

(graph theory) A set of vertices of a graph, such that each vertex in that graph is either in that set or adjacent to a vertex in that set.

(set theory) A mathematical operation that returns a set taking one or more sets as input.

(graph theory) a set of vertices of a graph, such that no pair of them are adjacent to each other; in other words, a set of vertices which are all "independent" of each other

A collection of recordings sold together in a single package.

(mathematics) In a manner which uses set theory / (mathematics) In the sense of set theory

(fuzzy set theory, fuzzy logic) A set whose elements have degrees of membership, instead of only full and empty membership.

(idiomatic) To prepare; to establish the basis or required conditions.

To establish the speed for a group to move at, for example in a race. / (idiomatic) To establish a common goal by example.

(grammar) An established expression whose wording is subject to little or no variation, and which may or may not be idiomatic. / (grammar) An idiomatic expression in general.