Signed partitions - A balls into urns approach

Abstract

Using Reiner's definition of Stirling numbers of type B of the second kind, we provide a 'balls into urns' approach for proving a generalization of a well-known identity concerning the classical Stirling numbers of the second kind: $x^n=\sum _{k=0}^{n}S(n,k)[x{]}_k.$

6 pages, one figure; submitted

Cited by in corpus (1)

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