Strong list-chromatic index of subcubic graphs is at most 10
Abstract
A strong edge coloring of a graph is an assignment of colors to the edges of such that two distinct edges are colored differently if they are incident to a common edge or share an endpoint. The strong chromatic index of a graph , denoted by , is the minimum number of colors needed for a strong edge coloring of . The edge weight of a graph is defined to be . It was proved in Chen et al in 2020 that every graph with edge weight at most 6 has a strong edge-coloring using at most 10 colors. In this paper, we consider the list version of strong edge-coloring. We strengthen this result by showing that every graph with edge weight at most 6 has a strong list-chromatic index at most 10. Specially, every subcubic graph has a strong list-chromatic index at most 10, which improves a result of Dai et al. in 2018.
Cite
@article{arxiv.2507.11927,
title = {Strong list-chromatic index of subcubic graphs is at most 10},
author = {Yunfang Tang and Zhiwei Bi},
journal= {arXiv preprint arXiv:2507.11927},
year = {2025}
}
Comments
6 pages,4 figures