Intersection (set theory)
In set theory, the intersection of two sets A {\displaystyle A} and B, {\displaystyle B,} denoted by A ∩ B, {\displaystyle A\cap B,} is the set containing all elements of A {\displaystyle A} that also belong to B {\displaystyle B} or equivalently, all elements of B {\displaystyle B} that also belong to A. {\displaystyle A.}
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