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arXiv 0707.1833math.PRmath.GR
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关于随机Cayley图的围长

On the girth of random Cayley graphs

Alex Gamburd, Shlomo Hoory, Mehrdad Shahshahani, Aner Shalev, Balint Virag

摘要:

证明了对称群的随机d-正则Cayley图的围长渐近几乎必然至少为(log_{d-1} |G|)^{1/2}/2,F_q上单代数群的随机d-正则Cayley图的围长渐近几乎必然至少为log_{d-1} |G| /dim(G).对于对称p-群,围长在log log |G|和(log |G|)^alpha之间,其中alpha<1。提出了几个问题和开放的问题。

英文摘要:

We prove that random d-regular Cayley graphs of the symmetric group asymptotically almost surely have girth at least (log_{d-1}|G|)^{1/2}/2 and that random d-regular Cayley graphs of simple algebraic groups over F_q asymptotically almost surely have girth at least log_{d-1}|G|/dim(G). For the symmetric p-groups the girth is between log log |G| and (log|G|)^alpha with alpha<1. Several conjectures and open questions are presented.

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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