مشخصات پژوهش

Roman f2g-dominating function Rf2gDF of a graph G = (V;E) is a function f : V 􀀀! f0; 1; 2g A satisfying the condition that every vertex v for which f(v) = 0 is adjacent to a vertex assigned 2 under f, or v is adjacent to at least two vertices assigned 1 under f.