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Asymptotic enumeration of Cayley digraphs
Israel Journal of Mathematics ( IF 0.8 ) Pub Date : 2021-05-25 , DOI: 10.1007/s11856-021-2150-0
Joy Morris , Pablo Spiga

In this paper we show that almost all Cayley digraphs have automorphism group as small as possible; that is, they are digraphical regular representations (DRRs). More precisely, we show that as r tends to infinity, for every finite group R of order r, out of all possible Cayley digraphs on R the proportion whose automorphism group is as small as possible tends to 1. This proves a natural conjecture first proposed in 1982 by Babai and Godsil.



中文翻译:

Cayley有向图的渐近枚举

在本文中,我们证明了几乎所有的Cayley有向图都具有尽可能小的自同构群。也就是说,它们是字母正则表示法(DRR)。更确切地说,我们表明,随着r趋于无穷大,对于r阶的每个有限群R,在R上所有可能的Cayley有向图中,其同构群尽可能小的比例趋向于1。这证明了首先提出的自然猜想1982年由Babai和Godsil创作。

更新日期:2021-05-25
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