University of Kashan Iranian Journal of Mathematical Chemistry 2228-6489 12 4 2021 12 01 On Sombor Index and some Topological Indices 209 215 111624 10.22052/ijmc.2021.243137.1588 EN Chinglensana Phanjoubam Mathematics department, North-Eastern Hill University, Shillong, India Sainkupar Mn Mawiong Department of Basic Sciences and Social Sciences, North Eastern Hill University, Shillong, India Journal Article 2021 09 27 Gutman recently introduced a new vertex-degree-based topological index called the Sombor index. In this paper, we present some new results relating the Sombor index and some well-studied topological indices: Zagreb indices, forgotten index, harmonic index, (general) sum-connectivity index and symmetric division deg index. Sombor index Zagreb indices forgotten index Harmonic index Sum-connectivity index https://ijmc.kashanu.ac.ir/article_111624_70eb6680db0a7162341bf37cbe6de294.pdf