A new approximation to the geometric-arithmetic index
classification
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keywords
geometric-arithmeticindexapproximationcharacterizechemicalconceptextremalgraph
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The concept of geometric-arithmetic index was introduced in the chemical graph theory recently, but it has shown to be useful. The aim of this paper is to obtain new inequalities involving the geometric-arithmetic index $GA_1$ and characterize graphs extremal with respect to them.
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