Difference between revisions of "Stirling numbers of the second kind"
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Revision as of 04:22, 27 June 2015
The Stirling numbers of the second kind, commonly written as $S(n,k)$ or $\begin{Bmatrix}n \\ k\end{Bmatrix}$ are given by $$S(n,k)=\dfrac{1}{k!} \displaystyle\sum_{j=0}^{k} (-1)^{k-j} {k \choose j} j^n,$$ where ${k \choose j}$ denotes a binomial coefficient.
