English

Note on the diversity of intersecting families

Combinatorics 2019-03-11 v1

Abstract

Let n=2k+1n=2k+1 be odd with k3k\geq3. In this note, we give two intersecting families with diversity larger than i=k+12k(2ki)\sum_{i=k+1}^{2k} \binom {2k}{i}, which disprove a conjecture of Huang.

Keywords

Cite

@article{arxiv.1903.03585,
  title  = {Note on the diversity of intersecting families},
  author = {Xiaomei Chen and Peng Jin},
  journal= {arXiv preprint arXiv:1903.03585},
  year   = {2019}
}