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A totally (Δ + 1)-colorable 1-planar graph with girth at least five

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Abstract

A graph is 1-planar if it can be drawn on the plane so that each edge is crossed by at most one other edge. In this paper, we prove that every 1-planar graph G with maximum degree Δ(G) ≥ 12 and girth at least five is totally (Δ(G) + 1)-colorable.

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Correspondence to Jian Liang Wu.

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The second author is supported by National Natural Science Foundation of China (Grant No. 11271006)

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Sun, L., Wu, J.L. & Cai, H. A totally (Δ + 1)-colorable 1-planar graph with girth at least five. Acta. Math. Sin.-English Ser. 32, 1337–1349 (2016). https://doi.org/10.1007/s10114-016-5480-9

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  • DOI: https://doi.org/10.1007/s10114-016-5480-9

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