Separating polynomial $\chi$-boundedness from $\chi$-boundedness
Combinatorics
2023-08-17 v2 Discrete Mathematics
Abstract
Extending the idea from the recent paper by Carbonero, Hompe, Moore, and Spirkl, for every function with and , we construct a hereditary class of graphs such that the maximum chromatic number of a graph in with clique number is equal to for every . In particular, we prove that there exist hereditary classes of graphs that are -bounded but not polynomially -bounded.
Keywords
Cite
@article{arxiv.2201.08814,
title = {Separating polynomial $\chi$-boundedness from $\chi$-boundedness},
author = {Marcin Briański and James Davies and Bartosz Walczak},
journal= {arXiv preprint arXiv:2201.08814},
year = {2023}
}
Comments
v2: new proof with improved results