ASIAN-EUROPEAN JOURNAL OF MATHEMATICS, 2022 (Peer-Reviewed Journal)
Article / Article
ASIAN-EUROPEAN JOURNAL OF MATHEMATICS
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Sum-connectivity index, tree, unicyclic graphs
The sum-connectivity index of a graph G is defined as the sum of weights 1/root d(w) +d(z ) over all edges wz of G, where d(w) and d(z) are the degrees of the vertices w and z in G, respectively. In this paper, we provide a simpler method to the extremal trees and unicyclic graph of the sum-connectivity index.