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Set Partition

A set partition of a Set $S$ is a collection of disjoint Subsets of $S$ whose Union is $S$. The number of partitions of the Set $\{k\}_{k=1}^n$ is called a Bell Number.

See also Bell Number, Block, Restricted Growth String, Stirling Number of the Second Kind


Ruskey, F. ``Info About Set Partitions.''

© 1996-9 Eric W. Weisstein