Title of article
Estimating the Estrada index Original Research Article
Author/Authors
José Antonio de la Pe?a، نويسنده , , Ivan Gutman، نويسنده , , Juan Rada، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2007
Pages
7
From page
70
To page
76
Abstract
Let G be a graph on n vertices, and let λ1,λ2,…,λn be its eigenvalues. The Estrada index of G is a recently introduced graph invariant, defined as image. We establish lower and upper bounds for EE in terms of the number of vertices and number of edges. Also some inequalities between EE and the energy of G are obtained.
Keywords
Graph spectrum , Estrada index , Energy (of graph)
Journal title
Linear Algebra and its Applications
Serial Year
2007
Journal title
Linear Algebra and its Applications
Record number
825744
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