Abstract
A total coloring of a graph \(G\) is a coloring of its vertices and edges such that adjacent or incident vertices and edges are not colored with the same color. A total \([k]\)-coloring of a graph \(G\) is a total coloring of \(G\) by using the color set \([k]=\{1,2,\ldots ,k\}\). Let \(f(v)\) denote the sum of the colors of a vertex \(v\) and the colors of all incident edges of \(v\). A total \([k]\)-neighbor sum distinguishing-coloring of \(G\) is a total \([k]\)-coloring of \(G\) such that for each edge \(uv\in E(G)\), \(f(u)\ne f(v)\). Let \(G\) be a graph which can be embedded in a surface of nonnegative Euler characteristic. In this paper, it is proved that the total neighbor sum distinguishing chromatic number of \(G\) is \(\Delta (G)+2\) if \(\Delta (G)\ge 14\), where \(\Delta (G)\) is the maximum degree of \(G\).
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Acknowledgments
This work was supported by the National Natural Science Foundation of China (11271006 11471193), Independent Innovation Foundation of Shandong University, IIFSDU (IFYT 14013 14012), Shandong Provincial Natural Science Foundation, China (ZR2012GQ002)(ZR2014AQ001).
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Xu, R., Wu, J. & Xu, J. Neighbor sum distinguishing total coloring of graphs embedded in surfaces of nonnegative Euler characteristic. J Comb Optim 31, 1430–1442 (2016). https://doi.org/10.1007/s10878-015-9832-7
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DOI: https://doi.org/10.1007/s10878-015-9832-7