mathjs/docs/reference/functions/composition.md
2015-05-04 14:37:18 -04:00

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Function composition

Calculate the number of ways to split n into k nonempty parts.

Syntax

math.composition(n, k)

Parameters

Parameter Type Description
n Number | BigNumber Total number of objects
k Number | BigNumber Number of objects in the subset

Returns

Type Description
Number | BigNumber The number of ways to split a set of n elements into k nonempty sets.

Examples

math.composition(8, 3);           // returns Number 21
math.composition(math.bignumber(70), math.bignumber(3)); // returns Number 2346

See also

combinations.js, stirlingS2.js, bellNumbers.js