arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1507.07573math.CO
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图的渐近最优邻和可区别全染色

Asymptotically optimal neighbor sum distinguishing total colorings of graphs

Sarah Loeb, Jakub Przybyło, Yunfang Tang

摘要:

给定图$G$的一个适当的全$k$ -染色$c:V(G)\cup E(G)\to\{1,2,\ldots,k\}$,我们定义一个顶点$v$的值为$c(v) + \sum_{uv \in E(G)} c(uv)$ .使$G$有一个其值构成一个真染色的真全$k$ -染色的最小整数$k$是$G$的邻和可区别色数数$χ"_Σ(G)$。Pilogniak和Woogniak(2013)证明了$χ"_Σ(G)\leq Δ(G)+3$对于任何具有最大度$Δ(G)$的简单图。在本文中,我们证明了这个界是渐近正确的,通过显示$χ"_Σ(G)\leq Δ(G)(1+o(1))$。我们的论证的主要思想依赖于Przybytelo(2014)关于邻域和可区别边着色的证明。

英文摘要:

Given a proper total $k$-coloring $c:V(G)\cup E(G)\to\{1,2,\ldots,k\}$ of a graph $G$, we define the value of a vertex $v$ to be $c(v) + \sum_{uv \in E(G)} c(uv)$. The smallest integer $k$ such that $G$ has a proper total $k$-coloring whose values form a proper coloring is the neighbor sum distinguishing total chromatic number of $G$, $χ"_Σ(G)$. Pilśniak and Woźniak (2013) conjectured that $χ"_Σ(G)\leq Δ(G)+3$ for any simple graph with maximum degree $Δ(G)$. In this paper, we prove this bound to be asymptotically correct by showing that $χ"_Σ(G)\leq Δ(G)(1+o(1))$. The main idea of our argument relies on Przybyło's proof (2014) regarding neighbor sum distinguishing edge-colorings.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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