Estrada index and Chebyshev polynomials

被引：23

作者：

Ginosar, Yuval ^{[2
]}

Gutman, Ivan ^{[1
]}

Mansour, Toufik ^{[2
]}

Schork, Matthias

机构：

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

[2] Univ Haifa, Dept Math, IL-31905 Haifa, Israel

来源：

CHEMICAL PHYSICS LETTERS | 2008年 / 454卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2008.02.026

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Let G be a graph whose eigenvalues are lambda(1), lambda(2),..., lambda(n). The Estrada index of G is equal to Sigma(n)(i=1)e(lambda i) . We point out certain classes of graphs whose characteristic polynomials are closely connected to the Chebyshev polynomials of the second kind. Various relations, in particular approximations, for the Estrada index of these graphs are obtained. (c) 2008 Elsevier B. V. All rights reserved.

引用

页码：145 / 147

页数：3

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