Generalized DP-colorings of graphs
Generalized DP-colorings of graphs
复制标题
图的广义 DP 着色
DOI:
10.1016/j.disc.2022.113186
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发表时间:
2023
影响因子:
0.8
通讯作者:
Stiebitz, Michael
中科院分区:
文献类型:
--
作者:
Kostochka, Alexandr V.;Schweser, Thomas;Stiebitz, Michael
In the present paper we extend the following three coloring concepts for the class of finite undirected graphs having multiple edges but no loops. First of all, the generalized coloring concept, in which the same colored vertices of a graph induce a subgraph satisfying a prescribed graph property. Secondly, the concept of variable degeneracy, which was introduced by Borodin, Kostochka and Toft in 2000; this makes it possible to give a common generalization of the point partition number and the list chromatic number. Finally, the DP-coloring concept as introduced by Ďvorák and Postle in 2018, where a list assignment of a graph is replaced by a cover. Combining these three coloring concepts leads to generalizations of various classical coloring results, including the theorems of Brooks, of Gallai, and of Erdős, Rubin and Taylor. Our main result is a DP-version of a theorem about partitions of graphs into a fixed number of induced subgraphs with bounded variable degeneracy due to Borodin, Kostochka, and Toft.
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