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arXiv 2409.10201math.CO
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度数为4的图的骨干着色

Backbone coloring for graphs with degree 4

Jagiellonian University(雅盖隆大学)

Krzysztof Michalik, Krzysztof Turowski

AI总结:

本文研究度数为4的图的骨干着色问题,针对路径、树等类别的骨干,对形如$BBC_λ(G, H) \le λ+ k$的问题给出了近乎完整的分类结果。

摘要:

带骨干H的图G的λ-骨干着色是一类图着色问题:给定图G及其子图H,我们需要为顶点分配颜色,使得G中每条边的两个端点颜色不同,且H中每条边的两个端点的颜色值相差至少为λ。\n 本文针对有界度数图、结合已知类别的骨干开展骨干着色研究。我们的结果是:针对最大度数为4的图,且骨干属于路径、树、匹配、星系这些类别时,对形如$BBC_λ(G, H) \le λ+ k$的问题给出了近乎完整的分类。

英文摘要:

The $λ$-backbone coloring of the graph $G$ with backbone $H$ is a graph-coloring problem in which we are given a graph $G$ and a subgraph $H$, and we want to assign colors to vertices in such a way that the endpoints of every edge from $G$ have different colors, and the endpoints of every edge from $H$ are assigned colors which differ by at least $λ$. In this paper we pursue research on backbone coloring of bounded-degree graphs with well-known classes of backbones. Our result is an almost complete classification of the complexity of deciding whether $BBC_λ(G, H) \le k$ for graphs with maximum degree at most $4$ and matching, galaxy, Hamiltonian path, and spanning tree backbones. We also determine the effect of allowing isolated vertices in matching and galaxy backbones.

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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