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arXiv · 1512.05531

A generalization of the Erdős-Ko-Rado Theorem

Gábor Hegedüs
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Abstract

Our main result is a new upper bound for the size of k-uniform, L-intersecting families of sets, where L contains only positive integers. We characterize extremal families in this setting. Our proof is based on the Ray-Chaudhuri--Wilson Theorem. As an application, we give a new proof for the Erdős-Ko-Rado Theorem, improve Fisher's inequality in the uniform case and give an uniform version of the Frankl-Füredi conjecture .

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Gábor Hegedüs. 2015-12-18. A generalization of the Erdős-Ko-Rado Theorem. https://arxiv.org/abs/1512.05531

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