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Proceedings of the American Mathematical Society

Published by the American Mathematical Society since 1950, Proceedings of the American Mathematical Society is devoted to shorter research articles in all areas of pure and applied mathematics.

ISSN 1088-6826 (online) ISSN 0002-9939 (print)

The 2020 MCQ for Proceedings of the American Mathematical Society is 0.85.

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Regularity conditions and intersecting hypergraphs
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by Peter Frankl PDF
Proc. Amer. Math. Soc. 82 (1981), 309-311 Request permission

Abstract:

Let $(\mathcal {F},X)$ be a hypergraph with a transitive group of automorphisms. Suppose further that any four edges of $\mathcal {F}$ intersect nontrivially. Denoting $\left | X \right |$ by $n$ we prove $\left | \mathcal {F} \right | = O({2^n})$. We show as well that it is not sufficient to suppose regularity instead of the transitivity of $\operatorname {Aut} (\mathcal {F})$.
References
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Additional Information
  • © Copyright 1981 American Mathematical Society
  • Journal: Proc. Amer. Math. Soc. 82 (1981), 309-311
  • MSC: Primary 05C65; Secondary 05A05, 05C25
  • DOI: https://doi.org/10.1090/S0002-9939-1981-0609674-1
  • MathSciNet review: 609674