On the complexity of H-colouring planar graphs

被引:9
|
作者
MacGillivray, G. [1 ]
Siggers, M. [1 ]
机构
[1] Univ Victoria, Dept Math & Stat, Victoria, BC V8W 3P4, Canada
关键词
Graph homomorphism; H-colouring; Planar graph; NP-completeness;
D O I
10.1016/j.disc.2008.05.016
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
We show that if H is an odd-cycle, or any non-bipartite graph of girth 5 and maximum degree at most 3, then planar H-COL is NP-complete. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:5729 / 5738
页数:10
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