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arXiv 2609.08903math.CO

关于具有正 Lin-Lu-Yau 曲率的正则图的分类

On the classification of regular graphs with positive Lin-Lu-Yau curvature

George Brooks, Nathanael Johnson, William Linz, Xiaonan Liu, Linyuan Lu, Wynton Vaughn

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中文总结 AI 辅助

本文证明正曲率正则图的直径上界和连通性,并分类所有正曲率三次图及正则平面图。

中文摘要 AI 辅助

我们证明了关于具有正 Lin-Lu-Yau (LLY) 曲率的 $d$-正则图的若干新的结构和分类结果。我们证明任何正曲率的 $d$-正则图的直径至多为 $2d-2$,这改进了先前由正曲率图的 Bonnet-Myers 型定理得到的最佳直径界。我们进一步证明,对于 $d\ge 3$,每个正曲率的 $d$-正则图都是 $3$-连通的。我们分类了所有正曲率的 $3$-正则图,以及所有正曲率的正则平面图。

英文摘要

We prove several new structural and classification results about $d$-regular graphs with positive Lin--Lu--Yau (LLY) curvature. We show that any positively curved $d$-regular graph has diameter at most $2d-2$, which improves the previously best known diameter bound obtained from the Bonnet-Myers-type theorem for positively curved graphs. We further show that every positively curved $d$-regular graph with $d\ge 3$ is $3$-connected. We classify all positively curved $3$-regular graphs, as well as all positively curved regular planar graphs.

发表机构

  • University of South Carolina(南卡罗来纳大学)
  • The Ohio State University(俄亥俄州立大学)
  • University of Memphis(孟菲斯大学)
  • Louisiana State University(路易斯安那州立大学)
  • Clemson University(克莱姆森大学)

机构由 AI 辅助整理,请以论文原文为准。

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