Upper Bounds on Turán Densities via Extremal Set Theory

Fuente: arXiv
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Main Authors: Chen, Yaobin, Liu, Xizhi, Yang, Ningyuan, Zhu, Tianming
Format: Preprint
Published: 2026
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author Chen, Yaobin
Liu, Xizhi
Yang, Ningyuan
Zhu, Tianming
author_facet Chen, Yaobin
Liu, Xizhi
Yang, Ningyuan
Zhu, Tianming
contents We exhibit, in a systematic way, connections between hypergraph Turán problems and extremal set theory. More specifically, we construct natural families of uniform hypergraphs for which the upper bounds on their Turán densities reduce to classical problems in extremal set theory, including the Erdős--Ko--Rado theorem, $L$-intersecting families, and the Erdős matching problem.
format Preprint
id arxiv_https___arxiv_org_abs_2606_02135
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Upper Bounds on Turán Densities via Extremal Set Theory
Chen, Yaobin
Liu, Xizhi
Yang, Ningyuan
Zhu, Tianming
Combinatorics
We exhibit, in a systematic way, connections between hypergraph Turán problems and extremal set theory. More specifically, we construct natural families of uniform hypergraphs for which the upper bounds on their Turán densities reduce to classical problems in extremal set theory, including the Erdős--Ko--Rado theorem, $L$-intersecting families, and the Erdős matching problem.
title Upper Bounds on Turán Densities via Extremal Set Theory
topic Combinatorics
url https://arxiv.org/abs/2606.02135