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arXiv 2004.09746math.CO
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最大度为3的有限阿贝尔群上单匹配半Cayley图的正规性

Normality of one-matching semi-Cayley graphs over finite abelian groups with maximum degree three

Majid Arezoomand, Mohsen Ghasemi

摘要:

一个图$Γ$称为群$G$上的半Cayley图,如果它允许$G$是具有两个相等轨道的半正则自同构群.如果$G$是${\rm Aut}(Γ)$的正规子群,我们说$Γ$是正规的。本文证明了有限阿贝尔群上最大度为3的连通不传递单匹配半Cayley图是正规图,并刻画了所有非正规图.

英文摘要:

A graph $Γ$ is said to be a semi-Cayley graph over a group $G$ if it admits $G$ as a semiregular automorphism group with two orbits of equal size. We say that $Γ$ is normal if $G$ is a normal subgroup of ${\rm Aut}(Γ)$. We prove that every connected intransitive one-matching semi-Cayley graph, with maximum degree three, over a finite abelian group is normal and characterize all such non-normal 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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