中文

由对换生成的对称群上 Cayley 图的谱

组合数学 2012-05-01 v2

摘要

对于整数 n2n\geq 2,令 XnX_n 为对称群 SnS_n 上由对换集 (12),(13),...,(1n){(1 2),(1 3),...,(1 n)} 生成的 Cayley 图。研究表明,XnX_n 的谱包含从 (n1)-(n-1)n1n-1 的所有整数(若 n=2n=2n=3n=3 则除外 0)。

关键词

引用

@article{arxiv.1201.2167,
  title  = {Spectrum of Cayley graphs on the symmetric group generated by transpositions},
  author = {Roi Krakovski and Bojan Mohar},
  journal= {arXiv preprint arXiv:1201.2167},
  year   = {2012}
}

备注

We have been informed by Guillaume Chapuy, Valentin F\'eray and Paul Renteln, that the problem in question can be solved by exploiting certain properties of the Jucys-Murphy elements, discovered by Jucys and independently by Flatto, Odlyzko and Wales