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Characterization of Graphs with an Eigenvalue of Large Multiplicity
Advances in Mathematical Physics ( IF 1.0 ) Pub Date : 2020-04-29 , DOI: 10.1155/2020/3054672
Linming Qi 1 , Lianying Miao 2 , Weiliang Zhao 1 , Lu Liu 3
Affiliation  

Let be a simple and undirected graph. The eigenvalues of the adjacency matrix of are called the eigenvalues of . In this paper, we characterize all the -vertex graphs with some eigenvalue of multiplicity and , respectively. Moreover, as an application of the main result, we present a family of nonregular graphs with four distinct eigenvalues.

中文翻译:

特征值大的图的特征

让我们成为一个简单的无向图。的邻接矩阵的特征值称为的特征值在本文中,我们描述所有的-阶图与多样性的特征值的一些和分别。此外,作为主要结果的应用,我们提出了一个具有四个不同特征值的非正则图族。
更新日期:2020-04-29
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