English

A variation on Heawood list-coloring for graphs on surfaces

Combinatorics 2013-05-22 v2

Abstract

We prove a variation on Heawood list-coloring for graphs on surfaces, modeled on Thomassen's planar 5-list-coloring theorem. For epsilon>0 define the Heawood number to be H(epsilon)=Floor((7+Sqrt[24*epsilon+1])/2). We prove that, except for epsilon=3, every graph embedded on a surface of Euler genus epsilon>0 with a distinguished face F can be list-colored when the vertices of F have (H(epsilon)-2)-lists and all other vertices have H(epsilon)-lists unless the induced subgraph on the vertices of F contains the complete graph on H(epsilon)-1 vertices.

Keywords

Cite

@article{arxiv.1302.7055,
  title  = {A variation on Heawood list-coloring for graphs on surfaces},
  author = {Joan P. Hutchinson},
  journal= {arXiv preprint arXiv:1302.7055},
  year   = {2013}
}

Comments

14 pages

R2 v1 2026-06-21T23:34:06.013Z