English

Anti-Ramsey numbers of graphs with some decomposition family sequences

Combinatorics 2019-03-26 v1

Abstract

For a given graph HH, the anti-Ramsey number of HH is the maximum number of colors in an edge-coloring of a complete graph which does not contain a rainbow copy of HH. In this paper, we extend the decomposition family of graphs to the decomposition family sequence of graphs and show that K5K_5 is determined by its decomposition family sequence. Based on this new graph notation, we determine the anti-Ramsey numbers for new families of graphs, including the Petersen graph, vertex-disjoint union of cliques, etc., and characterize the extremal colorings.

Keywords

Cite

@article{arxiv.1903.10319,
  title  = {Anti-Ramsey numbers of graphs with some decomposition family sequences},
  author = {Long-Tu Yuan and Xiao-Dong Zhang},
  journal= {arXiv preprint arXiv:1903.10319},
  year   = {2019}
}

Comments

20 pages, 3 figures