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Erschienen in:
01.02.2014
The adjacent vertex distinguishing total coloring of planar graphs
Erschienen in: Journal of Combinatorial Optimization | Ausgabe 2/2014
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Abstract
An adjacent vertex distinguishing total coloring of a graph G is a proper total coloring of G such that any pair of adjacent vertices have distinct sets of colors. The minimum number of colors needed for an adjacent vertex distinguishing total coloring of G is denoted by \(\chi''_{a}(G)\).
In this paper, we characterize completely the adjacent vertex distinguishing total chromatic number of planar graphs G with large maximum degree Δ by showing that if Δ≥14, then \(\varDelta+1\leq \chi''_{a}(G)\leq \varDelta+2\), and \(\chi''_{a}(G)=\varDelta+2\) if and only if G contains two adjacent vertices of maximum degree.