English

Anti-Ramsey numbers of paths and cycles in hypergraphs

Combinatorics 2019-11-13 v2

Abstract

The anti-Ramsey problem was introduced by Erd\H{o}s, Simonovits and S\'{o}s in 1970s. The anti-Ramsey number of a hypergraph H\mathcal{H}, ar(n,s,H)ar(n,s, \mathcal{H}), is the smallest integer cc such that in any coloring of the edges of the ss-uniform complete hypergraph on nn vertices with exactly cc colors, there is a copy of H\mathcal{H} whose edges have distinct colors. In this paper, we determine the anti-Ramsey numbers of linear paths and loose paths in hypergraphs for sufficiently large nn, and give bounds for the anti-Ramsey numbers of Berge paths. Similar exact anti-Ramsey numbers are obtained for linear/loose cycles, and bounds are obtained for Berge cycles. Our main tools are path extension technique and stability results on hypergraph Tur\'{a}n problems of paths and cycles.

Keywords

Cite

@article{arxiv.1901.06092,
  title  = {Anti-Ramsey numbers of paths and cycles in hypergraphs},
  author = {Ran Gu and Jiaao Li and Yongtang Shi},
  journal= {arXiv preprint arXiv:1901.06092},
  year   = {2019}
}