English

A note on circular chromatic number of graphs with large girth and similar problems

Combinatorics 2014-02-14 v1

Abstract

In this short note, we extend the result of Galluccio, Goddyn, and Hell, which states that graphs of large girth excluding a minor are nearly bipartite. We also prove a similar result for the oriented chromatic number, from which follows in particular that graphs of large girth excluding a minor have oriented chromatic number at most 55, and for the ppth chromatic number χp\chi_p, from which follows in particular that graphs GG of large girth excluding a minor have χp(G)p+2\chi_p(G)\leq p+2.

Keywords

Cite

@article{arxiv.1402.3142,
  title  = {A note on circular chromatic number of graphs with large girth and similar problems},
  author = {Jaroslav Nesetril and Patrice Ossona De Mendez},
  journal= {arXiv preprint arXiv:1402.3142},
  year   = {2014}
}