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New results on the harmonic index and its generalizations

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URI: https://hdl.handle.net/10016/33870
ISSN: 0340-6253
UXXI: AR/0000019993
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New-results_MATCH_2017.pdf (344.7 KB)
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2017
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MATCH
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Abstract
In 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.
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Harmonic index, Sum-connectivity index, Zagreb index, Vertex degree based topological indices
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Rodrígez, 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.
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