Intersection. Given two sets A and B, A ∩ B is the set of all elements of A that are also elements of B. If there are no common members between A and B, A ∩ B consists of the

empty set. A rather simplistic

example of intersection:

A = { 1, 2, 3, 5 }

B = { 1, 2, 3, 4 }

A ∩ B = {1, 2, 3}

∩ is written in HTML as ∩

See also: ∪