Disjoint Sets
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- Two sets AAA and BBB are disjoint if and only if A∩B=∅A\cap B=\emptysetA∩B=∅, where ∅\emptyset∅ denotes the empty set {}\{\}{}. That is, there is no element aaa that is both par…
By Tim Ratigan
- Tim Ratigan gives the formal definition of disjoint. We say that a family (we use family as the collective noun for sets) of sets is pairwise disjoint if every two are disjoint.
By Ray Li, Victor Wang