相关基金:Supported by the National Natural Science Foundation of China (11071002),the Pro- gram for New Century Excellent Talents in University, the Key Project of Chinese Ministry of Educa- tion (210091), and the Specialized Research Fund for the Doctoral Program of Higher Education (20103401110002)
In this paper we present a unified approach to characterizing the graphs with maximum spectral radii among the complements of trees, unicyclic graphs, bicyclic graphs and tricyclic graphs, respectively.