Trees,Unicyclic Graphs and Bicyclic Graphs with Exactly Two Q-main Eigenvalues

被引：4
|
作者：
Lin CHEN [1 ]
Qiong Xiang HUANG [2 ]
机构：
[1] College of Medical Engineering and Technology,Xinjiang Medical University
[2] College of Mathematics and System Science,Xinjiang
来源：
Acta Mathematica Sinica(New Series). | 2013年 / 29卷 / 11期
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摘要：
The signless Laplacian matrix of a graphG is defined to be the sum of its adjacency matrix and degree diagonal matrix,and its eigenvalues are called Q-eigenvalues of G.A Q-eigenvalue of a graph G is called a Q-main eigenvalue if it has an eigenvector the sum of whose entries is not equal to zero.In this work,all trees,unicyclic graphs and bicyclic graphs with exactly two Q-main eigenvalues are determined.
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页数：16
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