English

Planar graphs without 5-cycles and intersecting triangles are $(1,1,0)$-colorable

Combinatorics 2014-09-29 v2

Abstract

A (c1,c2,...,ck)(c_1,c_2,...,c_k)-coloring of GG is a mapping φ:V(G){1,2,...,k}\varphi:V(G)\mapsto\{1,2,...,k\} such that for every i,1iki,1 \leq i \leq k, G[Vi]G[V_i] has maximum degree at most cic_i, where G[Vi]G[V_i] denotes the subgraph induced by the vertices colored ii. Borodin and Raspaud conjecture that every planar graph without 55-cycles and intersecting triangles is (0,0,0)(0,0,0)-colorable. We prove in this paper that such graphs are (1,1,0)(1,1,0)-colorable.

Keywords

Cite

@article{arxiv.1409.4054,
  title  = {Planar graphs without 5-cycles and intersecting triangles are $(1,1,0)$-colorable},
  author = {Runrun Liu and Xiangwen Li and Gexin Yu},
  journal= {arXiv preprint arXiv:1409.4054},
  year   = {2014}
}
R2 v1 2026-06-22T05:56:15.474Z