Some Bounds on General Sum Connectivity Index
نویسندگان
چکیده
function f: G , with this property that f(G1) = f(G2) if G1 and G2 are isomorphic. There are several vertex distance-based and degree-based indices which introduced to analyze the chemical properties of molecule graph. For instance: Wiener index, PI index, Szeged index, geometric-arithmetic index, atom-bond connectivity index and general sum connectivity index are introduced to test the performance of chemical molecular structures. Several papers contributed to determine these distance-based or degree-based indices of special molecular graph (See Yan et al., [1], Gao et al., [2], Gao and Shi [3], Gao and Wang [4], Xi and Gao [5-6], Xi et al., [7], and Gao et al., [8] for more detail for more detail). The molecular graphs considered in our paper are all simple. The notations and terminologies used but undefined in this paper can be found in Bondy and Mutry [9].
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Some new bounds on the general sum--connectivity index
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