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首页> 外文期刊>Journal of Combinatorial Theory, Series B >Hamiltonicity in 3-connected claw-free graphs
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Hamiltonicity in 3-connected claw-free graphs

机译:3连通无爪图中的汉密尔顿性

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摘要

Kuipers and Veldman conjectured that any 3-connected claw-free graph with order nu and minimum degree delta >=(nu+6)/10 is Hamiltonian for nu sufficiently large. In this paper, we prove that if H is a 3-connected claw-free graph with sufficiently large order nu, and if delta(H)>=(nu+5)/10. then either H is Hamiltonian, or delta(H)=(nu+5)/10 and the Ryjacek's closure cl(H) of H is the line graph of a graph obtained from the Petersen graph P-10 by adding (nu-15)/10 pendant edges at each vertex of P-10. (C) 2005 Elsevier Inc. All rights reserved.
机译:Kuipers和Veldman猜想,对于nu足够大的任何3阶nu和最小度数δ> =(nu + 6)/ 10的无爪图都是哈密顿量。在本文中,我们证明了如果H是具有足够大阶nu的3连通无爪图,并且delta(H)> =(nu + 5)/ 10。那么H是哈密顿量或del(H)=(nu + 5)/ 10且H的Ryjacek闭合cl(H)是从Petersen图P-10通过加(nu-15 )/ 10个P-10顶点的垂线边缘。 (C)2005 Elsevier Inc.保留所有权利。

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