中文

完全二部图的正则图兰数

组合数学 2020-05-27 v4

摘要

rex(n,F)\mathrm{rex}(n, F) 表示不含 FF 作为子图的 nn 顶点正则图的最大边数。当 FFC4C_4K2,tK_{2,t}K3,3K_{3,3}t>s!t>s! 时的 Ks,tK_{s,t} 之一时,我们给出 rex(n,F)\mathrm{rex}(n, F) 的下界,其精确到常数因子为最佳可能。

关键词

引用

@article{arxiv.2005.02907,
  title  = {Regular Tur\'an numbers of complete bipartite graphs},
  author = {Michael Tait and Craig Timmons},
  journal= {arXiv preprint arXiv:2005.02907},
  year   = {2020}
}

备注

The proof of one of the main theorems has been significantly simplified thanks to a helpful insight by Michael Krivelevich