Strong list-chromatic index of subcubic graphs

Strong list-chromatic index of subcubic graphs
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次立方图的强表色指数

DOI:
10.1016/j.disc.2018.08.028
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发表时间:
2018-09
影响因子:
0.8
通讯作者:
Yu Gexin
Yu Gexin
中科院分区:
数学3区
文献类型:
--
作者:
Dai Tianjiao;Wang Guanghui;Yang Donglei;Yu Gexin

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图G的强k-边染色是指每个色类都是诱导匹配的k色边染色。图G的强色指数记为χ s′(G),它是使G具有强k-边染色的最小k. 1985年,Erdens和Nešetzil证明了χ s′(G)≤ 5 4 Δ(G)2,其中Δ(G)是G的最大次数.当G是一个最大度至多为3的图时,Andersen和Horák,Qing和Trotter独立地证明了这个猜想。本文研究了强边染色的列表形式。特别地,我们证明了每一个次立方图的强列表色指数至多为11,每一个平面次立方图的强列表色指数至多为10。
A strong k-edge-coloring of a graph G is an edge-coloring with k colors in which every color class is an induced matching. The strong chromatic index of G, denoted by χ s′(G), is the minimum k for which G has a strong k-edge-coloring. In 1985, Erdős and Nešetřil conjectured that χ s′(G)≤ 5 4 Δ (G) 2, where Δ (G) is the maximum degree of G. When G is a graph with maximum degree at most 3, the conjecture was verified independently by Andersen and Horák, Qing, and Trotter. In this paper, we consider the list version of strong edge-coloring. In particular, we show that every subcubic graph has strong list-chromatic index at most 11 and every planar subcubic graph has strong list-chromatic index at most 10.
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