New Results on the Geometric-Arithmetic Index
| Autor: | Akbar Jahanbani, Maryam Atapour, Zhibin Du |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Journal of Mathematics, Vol 2021 (2021) |
| Druh dokumentu: | article |
| ISSN: | 2314-4629 2314-4785 07544928 |
| DOI: | 10.1155/2021/4901484 |
| Popis: | Let G be a graph with vertex set VG and edge set EG. Let du denote the degree of vertex u∈VG. The geometric-arithmetic index of G is defined as GAG=∑uv∈EG2dudv/du+dv. In this paper, we obtain some new lower and upper bounds for the geometric-arithmetic index and improve some known bounds. Moreover, we investigate the relationships between geometric-arithmetic index and several other topological indices. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
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