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Choosability in coloring problems of graphs with restricted color lists

机译:颜色列表受限制的图形在着色问题中的选择能力

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In this paper we present a correlation between a variation of the list problem coloring in graphs, the (γ, μ)-coloring, and the property of choosability in graphs, resulting in the k-(γ, μ)-choosability. The list coloring problem is a variation of the classical vertex coloring problem, introduced by Erdos et al. in 1979, along with a property very studied in list coloring: the choosability in graphs. In this work, algorithms were developed to determine the k-choosability and the k-(γ, μ)-choosability of a general simple graph, and a greedy heuristic based on DSATUR. In addition, we applied special techniques to prove the property of choosability in some classes of graphs, involving a general proof for simple graphs, which guarantees that if a graph is k-colorable it is also k-(γ, μ)-choosable, being the computational complexity reduced from the class Πp2-complete to the NP-complete.
机译:在本文中,我们提出了图表中列表问题颜色的变化,(γ,μ)着色和图表中选择性的性质之间的相关性,从而导致了k-(γ,μ)选择性。列表着色问题是Erdos等人介绍的经典顶点着色问题的变体。 1979年,以及一项针对列表着色进行了深入研究的特性:图形的选择性。在这项工作中,开发了确定通用简单图的k选择性和k-(γ,μ)选择性以及基于DSATUR的贪婪启发式算法。此外,我们应用了特殊的技术来证明某些类型图的选择性,其中包括对简单图的一般证明,这保证了如果图是可k着色的,那么它也是k-(γ,μ)可选的,计算复杂度从Π p 2 -完全降低到NP-complete。

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