English

Planar graphs without 4-cycles and close triangles are (2,0,0)-colorable

Combinatorics 2018-06-21 v1

Abstract

For a set of nonnegative integers c1,,ckc_1, \ldots, c_k, a (c1,c2,,ck)(c_1, c_2,\ldots, c_k)-coloring of a graph GG is a partition of V(G)V(G) into V1,,VkV_1, \ldots, V_k such that for every ii, 1ik,G[Vi]1\le i\le k, G[V_i] has maximum degree at most cic_i. We prove that all planar graphs without 4-cycles and no less than two edges between triangles are (2,0,0)(2,0,0)-colorable.

Keywords

Cite

@article{arxiv.1806.07511,
  title  = {Planar graphs without 4-cycles and close triangles are (2,0,0)-colorable},
  author = {Heather Hoskins and Runrun Liu and Jennifer Vandenbussche and Gexin Yu},
  journal= {arXiv preprint arXiv:1806.07511},
  year   = {2018}
}
R2 v1 2026-06-23T02:35:25.592Z