Article ID Journal Published Year Pages File Type
1710562 Applied Mathematics Letters 2006 5 Pages PDF
Abstract

An eigenvalue of a graph GG is called a main eigenvalue if it has an eigenvector the sum of whose entries is not equal to zero, and it is well known that a graph has exactly one main eigenvalue if and only if it is regular. In this work, all connected unicyclic graphs with exactly two main eigenvalues are determined.

Related Topics
Physical Sciences and Engineering Engineering Computational Mechanics
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