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arXiv 2103.03767math.CO
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一致连通图

Uniformly connected graphs

Frank Göring, Tobias Hofmann, Manuel Streicher

摘要:

本文研究了一致$k$ -连通图和一致$k$ -边-连通图的结构.虽然这两种类型以前已经研究了彼此独立,我们分析这两个类之间的关系。我们证明了任何一致$k$ -连通图对于$k\le 3$也是一致$k$ -边连通的,并证明了对于$k>3$不是这样的。此外,对于$k\le 2$,一致$k$ -连通图和一致$k$ -边-连通图是很好理解的,并且已知如何构造一致$3$ -边-连通图.在这里,我们贡献的一致$3$ -连通图的启发Tuttes轮定理的建设性特征。最后,这些结果帮助我们证明了一致$3$ -连通图中最小度顶点数的一个紧界。

英文摘要:

In this article we investigate the structure of uniformly $k$-connected and uniformly $k$-edge-connected graphs. Whereas both types have previously been studied independent of each other, we analyze relations between these two classes. We prove that any uniformly $k$-connected graph is also uniformly $k$-edge-connected for $k\le 3$ and demonstrate that this is not the case for $k>3$. Furthermore, uniformly $k$-connected and uniformly $k$-edge-connected graphs are well understood for $k\le 2$ and it is known how to construct uniformly $3$-edge-connected graphs. We contribute here a constructive characterization of uniformly $3$-connected graphs that is inspired by Tuttes Wheel Theorem. Eventually, these results help us to prove a tight bound on the number of vertices of minimum degree in uniformly $3$-connected graphs.

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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