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On tricyclic graphs whose second largest eigenvalue does not exceed 1

✍ Scribed by Shuchao Li; Huangxu Yang

Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
499 KB
Volume
434
Category
Article
ISSN
0024-3795

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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 ~ are characterized in . In this paper we study the structure o

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Connected graphs in which the number of edges equals the number of vertices are called unicyclic graphs. In this paper, all unicyclic graphs whose second largest eigenvalue does not exceed 1 have been determined.