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arXiv 2501.16144math.CO
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Holroyd-Talbot猜想综述

A Survey of the Holroyd-Talbot Conjecture

Virginia Commonwealth University(弗吉尼亚联邦大学)

Glenn Hurlbert

AI总结:

本文综述了2005年Holroyd和Talbot提出的Erdős-Ko-Rado定理推广猜想的历史及相关支持结果,该猜想针对图的相交独立集合族的星型最大性展开。

摘要:

若集合族中任意两个成员都有公共元素,则称该集合族是相交的;若集合族中存在某个元素属于族内所有集合,则称该集合族是星型的。给定图G,令μ(G)表示G的最小极大独立集的大小。2005年,Holroyd和Talbot提出了Erdős-Ko-Rado定理的推广猜想:当1≤r≤μ(G)/2时,存在大小最大的相交独立r元集合族,且该集合族为星型。本文介绍了该猜想的历史,并综述了过去20年间支持该猜想的相关结果。

英文摘要:

A family of sets is intersecting if every pair of its members has an element in common. Such a family of sets is called a star if some element is in every set of the family. Given a graph $G$, let $μ(G)$ denote the size of the smallest maximal independent set of $G$. In 2005, Holroyd and Talbot conjectured the following generalization of the Erdős-Ko-Rado Theorem: for $1\le r\le μ(G)/2$, there is a maximum size intersecting family of independent $r$-sets that is a star. In this paper we present the history of this conjecture and survey the results that have supported it over the last 20 years.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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