Rodríguez García, José ManuelSigarreta Almira, José María2022-01-132022-01-132017Rodrígez, J. M. & Sigarreta, J. M. (2017). New Results on the Harmonic Index and Its Generalizations. MATCH Communications in Mathematical and in Computer Chemistry, 78(2), 384-404.0340-6253https://hdl.handle.net/10016/33870In this paper we obtain new inequalities involving the harmonic index and the(general) sum-connectivity index, and characterize graphs extremal with respect tothem. In particular, we improve and generalize some known inequalities and werelate this indices to other well-known topological indices.18engHarmonic indexSum-connectivity indexZagreb indexVertex degree based topological indicesresearch articleMatemáticasopen access3872404MATCH Communications in Mathematical and in Computer Chemistry78AR/0000019993