关于图能量的界

Bounds for the Energy of Graphs

研究简单无向连通图的能量。利用图的顶点数、边数、谱半径、最小特征值,获得了图能量的若干个新的上界和下界。这些结论在一定程度上加强了图能量与不同参数的联系。

The energy of simple undirected connected graphs is studied in the paper.By using the number of vertices,edges,spectral radius and minimum eigenvalues of a graph,we obtain some new upper and lower bounds of graph energy.The conclusions drawn in the research strengthen the relationship between graph energy and different parameters to some extent.