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arXiv 1306.3747math.CO
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阿贝尔群上的Cayley图

Cayley graphs on abelian groups

Edward Dobson, Pablo Spiga, Gabriel Verret

摘要:

设$A$是一个阿贝尔群,$ι$是由$i:a\mapsto a^{-1}$定义的$A$的自同构.一个Cayley图$Γ=\mathrm{Cay}(A,S)$称为有一个自同构群\emph{as small as possible},如果$\mathrm{Aut}(Γ)= A\rtimes\langle i\rangle$ .本文证明了几乎所有阿贝尔群上的Cayley图都有尽可能小的自同构群,证明了Babai和Godsil的一个猜想。

英文摘要:

Let $A$ be an abelian group and let $ι$ be the automorphism of $A$ defined by $i:a\mapsto a^{-1}$. A Cayley graph $Γ=\mathrm{Cay}(A,S)$ is said to have an automorphism group \emph{as small as possible} if $\mathrm{Aut}(Γ)= A\rtimes\langle i\rangle$. In this paper, we show that almost all Cayley graphs on abelian groups have automorphism group as small as possible, proving a conjecture of Babai and Godsil.

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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