The Laplacian spectral radius of graphs |
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| Authors: | Jianxi Li Wai Chee Shiu An Chang |
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| Affiliation: | 1.Department of Mathematics and Information Science,Zhangzhou Normal University,Fujian,P.R.China;2.Department of Mathematics,Hong Kong Baptist University,Hong Kong,P.R.China;3.Software College/Center of Discrete Mathematics,Fuzhou University,Fujian,P.R.China |
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| Abstract: | The Laplacian spectral radius of a graph is the largest eigenvalue of the associated Laplacian matrix. In this paper, we improve Shi’s upper bound for the Laplacian spectral radius of irregular graphs and present some new bounds for the Laplacian spectral radius of some classes of graphs. |
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