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A Note on Some Bounds of the -Estrada Index of Graphs
Advances in Mathematical Physics ( IF 1.0 ) Pub Date : 2020-03-16 , DOI: 10.1155/2020/3972789
Yang Yang 1 , Lizhu Sun 2 , Changjiang Bu 1, 2
Affiliation  

Let be a simple graph with vertices. Let , where and and denote the adjacency matrix and degree matrix of , respectively. is called the -Estrada index of , where denote the eigenvalues of . In this paper, the upper and lower bounds for are given. Moreover, some relations between the -Estrada index and -energy are established.

中文翻译:

关于图的-Estrada指数的某些界的注记

让我们做一个带有顶点的简单图形。让在哪里和和表示的邻接矩阵和度矩阵分别。被称为-埃斯特拉达指数其中,表示的特征值在本文中,给出了的上限和下限。此外,之间的一些关系-埃斯特拉达指数-能源成立。
更新日期:2020-03-16
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