MORE ON THE LAPLACIAN ESTRADA INDEX

被引：41

作者：

Zhou, Bo ^{[1
]}

Gutman, Ivan ^{[2
]}

机构：

[1] S China Normal Univ, Dept Math, Guangzhou 510631, Guangdong, Peoples R China

[2] Univ Kragujevac, Fac Sci, Kragujevac 34000, Serbia

来源：

APPLICABLE ANALYSIS AND DISCRETE MATHEMATICS | 2009年 / 3卷 / 02期

关键词：

Spectrum (of graph); Laplacian spectrum (of graph); Estrada index; Laplacian Estrada index; FOLDING DEGREE; EIGENVALUES; POWERS; SUM;

D O I：

10.2298/AADM0902371Z

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

Let G be a graph with n vertices and let mu(1), mu(2), ... , mu(n) be its Laplacian eigenvalues. In some recent works a quantity called Laplacian Estrada index was considered, defined as LEE(G) = (n)Sigma(i=1) e(mu i). We now establish some further properties of LEE, mainly upper and lower bounds interms of the number of vertices, number of edges, and the first Zagreb index.

引用

页码：371 / 378

页数：8

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