English

A note about online nonrepetitive coloring $k$-trees

Combinatorics 2019-09-09 v1

Abstract

We prove that it is always possible to color online nonrepetitively any (partial) kk-tree (that is, graphs with tree-width at most kk) with 4k4^k colors. This implies that it is always possible to color online nonrepetitively cycles, trees and series-parallel graphs with 1616 colors. Our results generalize the respective (offline) nonrepetitive coloring results.

Keywords

Cite

@article{arxiv.1909.02612,
  title  = {A note about online nonrepetitive coloring $k$-trees},
  author = {Balázs Keszegh and Xuding Zhu},
  journal= {arXiv preprint arXiv:1909.02612},
  year   = {2019}
}
R2 v1 2026-06-23T11:07:10.930Z