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arXiv 1407.8129math.CO
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关于图的长路和长圈的相对长度

On Relative Length of Long Paths and Cycles in Graphs

Zh. G. Nikoghosyan

摘要:

令$G$是$n$顶点上的图,$p$是最长路径的阶,$κ$是$G$的连通性。1989年,Bauer,Broersma Li和Veldman证明了:如果$G$是一个2-连通图,且对所有独立顶点的三元组$x,y,z$都有$d(x)+d(y)+d(z)\ge n+κ$,则$G$是哈密尔顿图。在本文中,我们改进了这一结果,降低了下界$n+κ$的$p+κ$。

英文摘要:

Let $G$ be a graph on $n$ vertices, $p$ the order of a longest path and $κ$ the connectivity of $G$. In 1989, Bauer, Broersma Li and Veldman proved that if $G$ is a 2-connected graph with $d(x)+d(y)+d(z)\ge n+κ$ for all triples $x,y,z$ of independent vertices, then $G$ is hamiltonian. In this paper we improve this result by reducing the lower bound $n+κ$ to $p+κ$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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