Eccentric connectivity index in transformation graph G(xy+)

Let G be a connected graph with vertex set V(G)and edge set E(G). The eccentric connectivity index of G is defined as Sigma(v is an element of 2V(G)) ec(v) deg(v) where ec(v) the eccentricity of a vertex v and deg(v)is its degree and denoted by epsilon(c)(G). In this paper, we investigate the eccentric connectivity index of the transformation graph G(xy+).