The Normalized Laplacian Estrada Index of a Graph


Jianxi Li, Ji-Ming Guo, Wai Chee Shiu




In this paper, we define and investigate the normalized Laplacian Estrada index of a graph. Some bounds for the normalized Laplacian Estrada index of a graph in term of its vertex number, maximum (or minimum) degree are obtained, some inequalities between the normalized Laplacian Estrada and the normalized Laplacian energy are also obtained.