Authors: Cvetković, Dragoš
Simić, Slobodan 
Title: On graphs whose second largest eigenvalue does not exceed (√5-1) 2
Journal: Discrete Mathematics
Volume: 138
Issue: 1-3
First page: 213
Last page: 227
Issue Date: 6-Mar-1995
ISSN: 0012-365X
DOI: 10.1016/0012-365X(94)00204-V
Abstract: 
It is well known in the theory of graph spectra that connected graphs except for complete multipartite (including complete) graphs have the second largest eigenvalue greater than 0. Graphs whose second largest eigenvalue does not exceed 1 3 are characterized in Cao and Yuan (1993). In this paper we study the structure of graphs whose second largest eigenvalue does not exceed (√5-1) 2.
Keywords: Forbidden subgraphs | Graph spectra | Hereditary properties | Join of graphs | Second largest eigenvalue
Publisher: Elsevier

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