The concept of geometric-arithmetic index GA(1) was introduced in the chemical graph theory recently, but it has shown to be useful. The aim of this paper is to give new inequalities involving the geometric-arithmetic index and characterize extremal graphs with respect to them.
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S China Normal Univ, Dept Math, Guangzhou 510631, Guangdong, Peoples R ChinaS China Normal Univ, Dept Math, Guangzhou 510631, Guangdong, Peoples R China
Yuan, Yan
Zhou, Bo
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S China Normal Univ, Dept Math, Guangzhou 510631, Guangdong, Peoples R ChinaS China Normal Univ, Dept Math, Guangzhou 510631, Guangdong, Peoples R China
Zhou, Bo
Trinajstic, Nenad
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Rugjer Boskovic Inst, Zagreb 10002, CroatiaS China Normal Univ, Dept Math, Guangzhou 510631, Guangdong, Peoples R China
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Univ Carlos III Madrid, Dept Matemat, Ave Univ 30, Madrid 28911, SpainUniv Carlos III Madrid, Dept Matemat, Ave Univ 30, Madrid 28911, Spain
Rodriguez, J. M.
Rodriguez-Velazquez, J. A.
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Univ Rovira & Virgili, Dept Engn Informat & Matemat, Av Paisos Catalans 26, E-43007 Tarragona, SpainUniv Carlos III Madrid, Dept Matemat, Ave Univ 30, Madrid 28911, Spain
Rodriguez-Velazquez, J. A.
Sigarreta, J. M.
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Univ Autonoma Guerrero, Fac Matemat, Carlos E Adame 54 Col Garita, Acalpulco Gro 39650, MexicoUniv Carlos III Madrid, Dept Matemat, Ave Univ 30, Madrid 28911, Spain
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Cent South Univ, Coll Math, Changsha 410075, Hunan, Peoples R China
Hunan City Univ, Dept Math & Comp Sci, Yiyang 413000, Hunan, Peoples R ChinaCent South Univ, Coll Math, Changsha 410075, Hunan, Peoples R China
Chen, Shubo
Liu, Weijun
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Cent South Univ, Coll Math, Changsha 410075, Hunan, Peoples R ChinaCent South Univ, Coll Math, Changsha 410075, Hunan, Peoples R China