Wiener Indices of Interval-Valued Fuzzy Graphs

Abstract

: The Wiener index of a graph G is defined as the sum of the distances between all unordered pairs of vertices. In this paper the Wiener index and hyper-Wiener index of interval-valued Pythagorean fuzzy graph, interval-valued complex Pythagorean fuzzy graph, interval-valued picture fuzzy graph, interval-valued intuitionistic fuzzy graph, and interval-valued Fermatean neutrosophic graph are investigated.