Eccentric Connectivity Index of Strongly Connected Digraphs

Vysakh Chakooth, Prasanth G. Narasimha-Shenoi, Prakash G. Narasimha-Shenoi

Let $G=(V,E)$ be a graph with non-empty set of vertices $V$ and set of edges $E$. The \emph{eccentric connectivity index} of the graph $G$ is defined as $$\displaystyle{ξ^C(G)…