顶点不连续5-环的度和条件

IF 0.5 4区数学 Q3 MATHEMATICS

Discussiones Mathematicae Graph Theory Pub Date : 2022-05-27 DOI:10.7151/dmgt.2458

Maoqun Wang, Jianguo Qian

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引用次数: 0

摘要

摘要设n和k是两个整数，G是一个有n=5k个顶点的图。王证明了如果δ（G）≥3k，则G包含k个长度为5的顶点不相交环。2018年，千叶和山下询问度条件是否可以用度和条件代替。在本文中，我们对这个问题给出了肯定的回答。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Degree Sum Condition for Vertex-Disjoint 5-Cycles

Abstract Let n and k be two integers and G a graph with n = 5k vertices. Wang proved that if δ (G) ≥ 3k, then G contains k vertex disjoint cycles of length 5. In 2018, Chiba and Yamashita asked whether the degree condition can be replaced by degree sum condition. In this paper, we give a positive answer to this question.

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来源期刊

Discussiones Mathematicae Graph Theory MATHEMATICS-

CiteScore

2.20

自引率

0.00%

发文量

审稿时长

53 weeks

期刊介绍： The Discussiones Mathematicae Graph Theory publishes high-quality refereed original papers. Occasionally, very authoritative expository survey articles and notes of exceptional value can be published. The journal is mainly devoted to the following topics in Graph Theory: colourings, partitions (general colourings), hereditary properties, independence and domination, structures in graphs (sets, paths, cycles, etc.), local properties, products of graphs as well as graph algorithms related to these topics.