relative complement

Definition from Wiktionary, the free dictionary
Jump to: navigation, search



relative complement (plural relative complements)

  1. (set theory) Given two sets A and B, the relative complement of A in B is the set that contains exactly those elements belonging to B but not to A.

Usage notes[edit]

  • In mathematical expressions, the relative complement of A in B is denoted B ∖ A according to the ISO 31-11 standard (sometimes written B − A, but this notation is ambiguous, as in some contexts it can be interpreted as the set of all b − a, where b is taken from B and a from A).