Counting and recounting
type: Item
instance of: scholarly article
title: Counting and recounting
zbMATH Open document ID: 0535.05009
DOI: 10.1007/BF03026506
author: Marta Sved
published in: The Mathematical Intelligencer
publication date: 1983-01-01T00:00:00Z
review text: An expository article concerning combinatorial identities and their ''natural'' interpretations, written with a light touch and enjoyable to read. Included are identities involving products, summations and inclusion/exclusion. The author concludes by challenging the reader to find the ''natural'' meaning of the identity \(4^ n=\sum^{h}_{r=0}\left( \begin{matrix} 2r\\ r\end{matrix} \right)\left( \begin{matrix} 2n-2r\\ n-r\end{matrix} \right).\)
Mathematics Subject Classification ID: 05A19
Mathematics Subject Classification ID: 05-02
zbMATH DE Number: 3849237
zbMATH Keywords: product formulae
zbMATH Keywords: interpretations of identities
reviewed by: Ezra Brown
MaRDI profile type: Publication
full work available at URL: https://doi.org/10.1007/bf03026506
OpenAlex ID: W1991670188
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description: scientific article; zbMATH DE number 3849237