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The -labelling of planar graphs without 4-cycles.

Authors :
Zhu, Haiyang
Hou, Lifeng
Chen, Wei
Lü, Xinzhong
Source :
Discrete Applied Mathematics. Jan2014, Vol. 162, p355-363. 9p.
Publication Year :
2014

Abstract

Abstract: Wegner conjectured that for each planar graph with maximum degree at least 4, if , and if . Let be a planar graph without 4-cycles. In this paper, we discuss the -labelling of , and show that , where and are positive integers with . As a corollary, and . [Copyright &y& Elsevier]

Details

Language :
English
ISSN :
0166218X
Volume :
162
Database :
Academic Search Index
Journal :
Discrete Applied Mathematics
Publication Type :
Academic Journal
Accession number :
92511465
Full Text :
https://doi.org/10.1016/j.dam.2013.08.039