An edge grafting theorem on the energy o
โ
Hai-Ying Shan; Jia-Yu Shao; Fei Gong; Yue Liu
๐
Article
๐
2010
๐
Elsevier Science
๐
English
โ 159 KB
The energy of a graph is the sum of the absolute values of the eigenvalues of its adjacency matrix. The edge grafting operation on a graph is certain kind of edge moving between two pendant paths starting from the same vertex. In this paper we show how the graph energy changes under the edge graftin