Nerve of a family of sets

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The simplicial complex with as simplices the finite non-empty subsets of with non-empty intersection. In particular, the vertices of are the non-empty elements of .

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Nerve of a family of sets. Encyclopedia of Mathematics. URL:
This article was adapted from an original article by M.I. Voitsekhovskii (originator), which appeared in Encyclopedia of Mathematics - ISBN 1402006098. See original article