Abstract
Let G be a simple graph on n vertices. The Laplacian Estrada index of G is defined as , where
are the Laplacian eigenvalues of G. In this paper, we characterize the connected
-graph with the maximum Laplacian Estrada index for
. We also obtain some results on the Laplacian Estrada index for
.
Disclosure statement
No potential conflict of interest was reported by the author(s).