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Union-Closed Set


A union-closed set is a nonempty finite collection of distinct nonempty finite sets which is closed under union.


See also

Union-Closed Sets Conjecture

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Cite this as:

Weisstein, Eric W. "Union-Closed Set." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Union-ClosedSet.html

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