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In this paper, we extend the recently introduced vertex-degree-based topological index, Sombor and call it general index. The index generalizes both forgotten We present bounds in terms of other important graph parameters for also explore Nordhaus–Gaddum-type result further relations between generalized indices: Randić sum-connectivity

introduction: in order to fulfill the health and medical needs of rural people, iran's medical services insurance organization approved a plan to provide rural health insurance in 2005. the plan aimed to make an appropriate context for the activities of private health care service providers in the rural areas and to meet public expectations for access to specialized medical services. in this st...