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Neighbor sum distinguishing total chromatic number of planar graphs with maximum degree 10

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  • Yang, Donglei
  • Sun, Lin
  • Yu, Xiaowei
  • Wu, Jianliang
  • Zhou, Shan

Abstract

Given a simple graph G, a proper total-k-coloring ϕ:V(G)∪E(G)→{1,2,…,k} is called neighbor sum distinguishing if Sϕ(u) ≠ Sϕ(v) for any two adjacent vertices u, v ∈ V(G), where Sϕ(u) is the sum of the color of u and the colors of the edges incident with u. It has been conjectured by Pilśniak and Woźniak that Δ(G)+3 colors enable the existence of a neighbor sum distinguishing total coloring. The conjecture is confirmed for any graph with maximum degree at most 3 and for planar graph with maximum degree at least 11. We prove that the conjecture holds for any planar graph G with Δ(G)=10. Moreover, for any planar graph G with Δ(G) ≥ 11, Δ(G)+2 colors guarantee such a total coloring, and the upper bound Δ(G)+2 is tight.

Suggested Citation

  • Yang, Donglei & Sun, Lin & Yu, Xiaowei & Wu, Jianliang & Zhou, Shan, 2017. "Neighbor sum distinguishing total chromatic number of planar graphs with maximum degree 10," Applied Mathematics and Computation, Elsevier, vol. 314(C), pages 456-468.
    • Handle: RePEc:eee:apmaco:v:314:y:2017:i:c:p:456-468
    DOI: 10.1016/j.amc.2017.06.002
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    References listed on IDEAS

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    1. Weifan Wang & Danjun Huang, 2014. "The adjacent vertex distinguishing total coloring of planar graphs," Journal of Combinatorial Optimization, Springer, vol. 27(2), pages 379-396, February.
    2. Cunquan Qu & Guanghui Wang & Guiying Yan & Xiaowei Yu, 2016. "Neighbor sum distinguishing total choosability of planar graphs," Journal of Combinatorial Optimization, Springer, vol. 32(3), pages 906-916, October.
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    Cited by:

    1. Jingjing Huo & Yiqiao Wang & Weifan Wang & Wenjing Xia, 2020. "Neighbor-distinguishing total coloring of planar graphs with maximum degree twelve," Journal of Combinatorial Optimization, Springer, vol. 39(1), pages 246-272, January.
    2. Yulin Chang & Qiancheng Ouyang & Guanghui Wang, 2019. "Adjacent vertex distinguishing total choosability of planar graphs with maximum degree at least 10," Journal of Combinatorial Optimization, Springer, vol. 38(1), pages 185-196, July.
    3. Chao Song & Changqing Xu, 2020. "Neighbor sum distinguishing total colorings of IC-planar graphs with maximum degree 13," Journal of Combinatorial Optimization, Springer, vol. 39(1), pages 293-303, January.
    4. H. Hocquard & J. Przybyło, 2020. "On the total neighbour sum distinguishing index of graphs with bounded maximum average degree," Journal of Combinatorial Optimization, Springer, vol. 39(2), pages 412-424, February.
    5. Donghan Zhang, 2021. "Neighbor Sum Distinguishing Total Choosability of IC-Planar Graphs without Theta Graphs Θ 2,1,2," Mathematics, MDPI, vol. 9(7), pages 1-11, March.
    6. Xu, Changqing & Li, Jianguo & Ge, Shan, 2018. "Neighbor sum distinguishing total chromatic number of planar graphs," Applied Mathematics and Computation, Elsevier, vol. 332(C), pages 189-196.

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