中文

Coxeter 群中错排数对数凸性的组合证明

组合数学 2023-08-16 v2

摘要

我们给出了对称群 Sn\mathfrak{S}_n、超八面体群 Bn\mathfrak{B}_n 与半超八面体群 Dn\mathfrak{D}_n 中错排数对数凸性的组合证明。我们还证明了 Sn\mathfrak{S}_nBn\mathfrak{B}_n 中偶数与奇数错排数序列是对数凸的。

关键词

引用

@article{arxiv.2011.09546,
  title  = {Combinatorial proof of the log-convexity for the derangements in the Coxeter groups},
  author = {Hiranya Kishore Dey and Subhajit Ghosh},
  journal= {arXiv preprint arXiv:2011.09546},
  year   = {2023}
}

备注

The mapping that is defined in Theorem 3.12 is not injective. Hence, the proof is not complete