Abstract
A 2-distance vertex-distinguishing total coloring of graph G is a proper total coloring of G such that any pair of vertices at distance of two have distinct sets of colors. The 2-distance vertex-distinguishing total chromatic number $\chi_{d2}^{''}(G)$ of G is the minimum number of colors needed for a 2-distance vertex-distinguishing total coloring of G. In this paper, it's proved that if G is a subcubic graph, then $\chi_{d2}^{''}(G)\le 7$.
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More From: Proceedings of the Romanian Academy, Series A: Mathematics, Physics, Technical Sciences, Information Science
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