I n the first century of Roman domination silver jewelry in the Balkan region is very numerous, and local production of these decorations lasted until the middle of the 3rd century. In that production an important role played the autochthonous component. Gold jewelry from this region is of East-Mediterranean origin, and some shapes of ornaments and use of the techinques of filigree and granulat...

Let G = ( V, E ) be a simple graph with vertex setxs V and edge set . A mixed Roman dominating function of is f : ∪ → {0, 1, 2} satisfying the condition that every element x ∈ for which f(x) 0 adjacent or incident to at least one y f(y) 2. The weight ω( ∑ domination number γ R minimum We first show problem computing * NP-complete bipartite graphs then we present upper lower bounds on number, so...