On the arithmetic-geometric index of graphs
On the arithmetic-geometric index of graphs
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论图的算术几何索引
DOI:
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发表时间:
2020-10
影响因子:
2.6
通讯作者:
Wu Baoyindureng
中科院分区:
文献类型:
--
作者:
Cui Shu-Yu;Wang Weifan;Tian Gui-Xian;Wu Baoyindureng
Very recently, the first geometric-arithmetic index $GA$ and arithmetic-geometric index $AG$ were introduced in mathematical chemistry. In the present paper, we first obtain some lower and upper bounds on $AG$ and characterize the extremal graphs. We also establish various relations between $AG$ and other topological indices, such as the first geometric-arithmetic index $GA$, atom-bond-connectivity index $ABC$, symmetric division deg index $SDD$, chromatic number $\chi$ and so on. Finally, we present some sufficient conditions of $GA(G)>GA(G-e)$ or $AG(G)>AG(G-e)$ for an edge $e$ of a graph $G$. In particular, for the first geometric-arithmetic index, we also give a refinement of Bollobas-Erdős-type theorem obtained in [3].
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DOI:
10.1007/bf00551363
发表时间:
1974-06
期刊:
Theoretica chimica acta
影响因子:
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作者:
D. Cvetkovic;I. Gutman;N. Trinajstic
通讯作者:
D. Cvetkovic;I. Gutman;N. Trinajstic
影响因子:
2.8
作者:
Das, Kinkar Ch.;Trinajstic, N.
通讯作者:
Trinajstic, N.
DOI:
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发表时间:
1998-10
期刊:
Indian journal of chemistry. Sect. A: Inorganic, physical, theoretical & analytical
影响因子:
--
作者:
Ernesto Estrada;Luis A. Torres;L. Rodríguez;I. Gutman
通讯作者:
Ernesto Estrada;Luis A. Torres;L. Rodríguez;I. Gutman
影响因子:
1.4
作者:
Shigehalli, V. S.;Kanabur, Rachanna
通讯作者:
Kanabur, Rachanna
DOI:
--
发表时间:
2011
期刊:
--
影响因子:
--
作者:
K. Das;I. Gutman;Boris Furtula
通讯作者:
K. Das;I. Gutman;Boris Furtula