Document Type : Research Articles


Annamalai University, Tamil Nadu 608002, India


The inverse connective eccentricity index of a connected graph G is defined as ξ−1
ce (G) =P u∈V(G)ǫG(u)dG(u) , where ǫG(u) and dG(u) are the eccentricity and degree of a vertex u in G,respectively. In this paper, we obtain an upper bounds for inverse connective eccentricity indices for various classes of graphs such as generalized hierarchical product graph and F-sum of graphs.