
For a simple graph $G$, an adjacent vertex distinguishing (or AVD) total $k$-coloring is a proper total $k$-coloring of $G$ such that any two adjacent vertices have different color sets; a color set for vertex $v$ consisting of the color of $v$ and the colors of its incidence edges. The AVD total chromatic number $\chi_a''(G)$ is the minimum $k$ such that $G$ has an AVD total $k$-coloring. Here is the main result. \par Theorem. For any planar graph $G$ with maximum degree $\Delta(G) $, $\chi_a''(G)\leq \max\{\Delta(G) + 2, 12\}$. \par Moreover, any planar graph $G$ with maximum degree 10 has an AVD total-$(\Delta(G)+2)$-coloring and the bound $\Delta(G)+2$ is sharp.
Extremal problems in graph theory, Coloring of graphs and hypergraphs, maximum degree, planar graph, Vertex degrees, discharging method, adjacent vertex distinguishing total coloring, Planar graphs; geometric and topological aspects of graph theory
Extremal problems in graph theory, Coloring of graphs and hypergraphs, maximum degree, planar graph, Vertex degrees, discharging method, adjacent vertex distinguishing total coloring, Planar graphs; geometric and topological aspects of graph theory
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