Sharp Bounds for the Second-Order General Connectivity Index of Hexagonal Chains

الملخص EN

Given H, a hexagonal chain, we determine an expression of its second-order general connectivity index, denoted by χ2α(H), in terms of inlet features of H.

Moreover, by applying the method in integer programming theory, we completely determine the extremal chains with the minimal or maximal χ2α(H) over the set of hexagonal chains.