University of Kashan Iranian Journal of Mathematical Chemistry 2228-6489 6 2 2015 10 01 Edge-decomposition of Topological Indices 103 108 10107 10.22052/ijmc.2015.10107 EN I. Gutman Faculty of Science, University of Kragujevac, Kragujevac, Serbia Journal Article 2015 05 27 The topological indices, defined as the sum of contributions of all pairs of vertices (among which are the Wiener, Harary, hyper–Wiener indices, degree distance, and many others), are expressed in terms of contributions of edges and pairs of edges. topological index Molecular Graph edge-decomposition coindex https://ijmc.kashanu.ac.ir/article_10107_7219f11930f0bb2a7a243517ae34b7d6.pdf