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Identities for Combinatorial Extremal Theory

Identities for Combinatorial Extremal Theory Let Ω be the set {1, 2, …, n}, and let Ø be the empty set. Let G be the family of all non‐empty sets of subsets of Ω. For A ∈ G and X ⊆ Ω, put ZA(X)={Øif there is noA∈AwithA⊆X,∩A∈A,A⊆XAotherwise. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Bulletin of the London Mathematical Society Wiley

Identities for Combinatorial Extremal Theory

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References (3)

Publisher
Wiley
Copyright
© London Mathematical Society
ISSN
0024-6093
eISSN
1469-2120
DOI
10.1112/S0024609397003238
Publisher site
See Article on Publisher Site

Abstract

Let Ω be the set {1, 2, …, n}, and let Ø be the empty set. Let G be the family of all non‐empty sets of subsets of Ω. For A ∈ G and X ⊆ Ω, put ZA(X)={Øif there is noA∈AwithA⊆X,∩A∈A,A⊆XAotherwise.

Journal

Bulletin of the London Mathematical SocietyWiley

Published: Nov 1, 1997

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