去除一个周期的完整图谱特征

IF 0.9 2区 数学 Q2 MATHEMATICS Journal of Combinatorial Theory Series A Pub Date : 2024-02-09 DOI:10.1016/j.jcta.2024.105868
Muhuo Liu , Xiaofeng Gu , Haiying Shan , Zoran Stanić
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引用次数: 0

摘要

如果不存在另一个具有相同频谱的图,则该图由其频谱决定。Cámara 和 Haemers 证明,通过删除具有 k 个顶点的循环 Ck 的所有边,从具有 n 个顶点的完整图 Kn 得到的图 Kn∖Ck,在 k∈{3,4,5} 时由其谱决定,但在 k=6 时则不是。在本文中,我们将证明 k=6 是 Kn∖Ck 的谱确定性的唯一例外。
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Spectral characterization of the complete graph removing a cycle

A graph is determined by its spectrum if there is not another graph with the same spectrum. Cámara and Haemers proved that the graph KnCk, obtained from the complete graph Kn with n vertices by deleting all edges of a cycle Ck with k vertices, is determined by its spectrum for k{3,4,5}, but not for k=6. In this paper, we show that k=6 is the unique exception for the spectral determination of KnCk.

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来源期刊
CiteScore
2.90
自引率
9.10%
发文量
94
审稿时长
12 months
期刊介绍: The Journal of Combinatorial Theory publishes original mathematical research concerned with theoretical and physical aspects of the study of finite and discrete structures in all branches of science. Series A is concerned primarily with structures, designs, and applications of combinatorics and is a valuable tool for mathematicians and computer scientists.
期刊最新文献
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