论文标题

平面图重新上色的Thomassen型方法

A Thomassen-type method for planar graph recoloring

论文作者

Dvořák, Zdeněk, Feghali, Carl

论文摘要

$ k $ g $的$ k $颜色的重新配置图$ r_k(g)$具有$ g $ $ g $的所有可能的$ k $ - 颜色,如果它们的颜色完全不同,则两种颜色是相邻的。我们使用灵感来自Thomassen启发的列表着色技术,以证明对于带有$ n $ vertices的平面图$ g $,$ r_ {10}(g)$的直径最多为$ 8n $,并且如果$ g $是三角形的,则是$ r_7(g)$,最多为7n $。

The reconfiguration graph $R_k(G)$ for the $k$-colorings of a graph $G$ has as vertices all possible $k$-colorings of $G$ and two colorings are adjacent if they differ in the color of exactly one vertex. We use a list coloring technique inspired by results of Thomassen to prove that for a planar graph $G$ with $n$ vertices, $R_{10}(G)$ has diameter at most $8n$, and if $G$ is triangle-free, then $R_7(G)$ has diameter at most $7n$.

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