arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.06432math.CO
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顶点传递图的表示

Presentations for Vertex Transitive Graphs

Agelos Georgakopoulos, Matthias Hamann, Alex Wendland

摘要:

我们概括的凯莱图的标准结构中的一组介绍,允许一些顶点服从不同的relators比其他。由此产生的表示概念允许我们表示每个顶点传递图。作为一个中间步骤,我们证明了每一个可数无限,连通,顶点传递图有一个完美的匹配。顺便说一句,我们构造了一个2-端立方顶点传递图的例子,它不是凯莱图,回答了沃特金斯从1990年提出的一个问题。

英文摘要:

We generalise the standard constructions of a Cayley graph in terms of a group presentation by allowing some vertices to obey different relators than others. The resulting notion of presentation allows us to represent every vertex transitive graph. As an intermediate step, we prove that every countably infinite, connected, vertex transitive graph has a perfect matching. Incidentally, we construct an example of a 2-ended cubic vertex transitive graph which is not a Cayley graph, answering a question of Watkins from 1990.

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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