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Two sets A and B are said to be '''disjoint''' if their [[Intersect|intersection]] is the [[empty set]]. The empty set is disjoint from every set.
Two sets A and B are said to be '''disjoint''' if their [[Intersect|intersection]] is the [[empty set]]. The empty set is disjoint from every set. The union of disjoint sets is always a superset of each of the original sets (as long as the sets are finite).
[[Category:Mathematics]]
[[Category:Mathematics]]