Adjacent vertex-distinguishing edge coloring of 2-degenerate graphs

作者:Wang, Yi; Cheng, Jian; Luo, Rong*; Mulley, Gregory
来源:Journal of Combinatorial Optimization, 2016, 31(2): 874-880.
DOI:10.1007/s10878-014-9796-z

摘要

The adjacent vertex-distinguishing chromatic index chi(avd)'of a graph is the smallest integer for which admits a proper edge k-coloring such that no pair of adjacent vertices are incident with the same set of colors. In this paper, we prove that if G is a 2-degenerate graph without isolated edges, then chi(avd)' (G) <= mad{6, Delta(G) + 1}. Moreover, we also show that when Delta >= 6, chi(avd)' = Delta(G) + 1 if and only if G contains two adjacent vertices of maximum degree.