Reformulated F-index of graph operations

The first general Zagreb index is defined as M 1 (G) =Σv2V (G) deg(v) . The case λ = 3,is called F-index. Similarly, reformulated first general Zagreb index is defined in terms of edge-degrees as EM 1 (G) =Σ e2E(G) deg(e) and the reformulated F-index is RF(G) = Σ e2E(G) deg(e)3. In this paper, we compute the reformulated F-index for some graph operations.

کلیدواژه ها:

first general Zagreb index ، reformulated first general Zagreb index ، F-index ، reformulated F-index