Generalized Nordhaus-Gaddum type results for general Randic index and geometric-arithmetic index of graphs*

Nan Jial1, Zhao Wang1, Yuzhi Xiao2, Jun Yin2
1School of Mathematics, Beijing Normal University, Xining, Qinghai 810008, China
2School of Computer, Qinghai Normal University, Xining, Qinghai, 810008, China

Abstract

Randic index and geometric-arithmetic index are two important chemical indices. In this paper, we give the generalized Nordhaus-Gaddum-type inequalities for the two kinds of chemical indices.