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Hamiltonicity of edge-chromatic critical graphs
Discrete Mathematics ( IF 0.7 ) Pub Date : 2020-03-04 , DOI: 10.1016/j.disc.2020.111881
Yan Cao , Guantao Chen , Suyun Jiang , Huiqing Liu , Fuliang Lu

Given a graph G, denote by Δ(G) and χ(G) the maximum degree and the chromatic index of G, respectively. A simple graph G is called edge-Δ-critical if Δ(G)=Δ, χ(G)=Δ+1 and χ(H)Δ for every proper subgraph H of G. We prove that every edge-Δ-critical graph of order n with maximum degree at least 2n3+12 is Hamiltonian.



中文翻译:

边色临界图的汉密尔顿性

给定图 G,以表示 ΔGχG 最大度数和色度指数 G, 分别。一个简单的图G被称为边缘Δ-如果ΔG=ΔχG=Δ+1个χHΔ 对于每个适当的子图 HG。我们证明,每个优势-Δ临界图 ñ 至少具有最高学位 2ñ3+12 是哈密尔顿。

更新日期:2020-03-05
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