Touchard polynomial
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English[edit]
Etymology[edit]
Studied by Jacques Touchard.
Noun[edit]
Touchard polynomial (plural Touchard polynomials)
- (mathematics) Any member of a polynomial sequence of binomial type defined by where is a Stirling number of the second kind, i.e. the number of partitions of a set of size n into k disjoint non-empty subsets.