On distance-based topological invariants of Isaac graphs

Abstract

Let G be a simple connected graph. The Wiener index of G is the sum of the distances between all unordered pairs of vertices in G. In this paper we derive formulas for the Wiener index and two other Wiener-types such as Schultz and hyper-Wiener indices in the class of chemical compounds whose hydrogen-suppressed molecular graphs are isomorphic to an Isaac graph.