Multiplicative Zagreb Eccentricity Indices of Some Composite Graphs
نویسندگان
چکیده
Let G be a connected graph. The multiplicative Zagreb eccentricity indices of G are defined respectively as Π1(G) = ∏ v∈V (G) ε 2 G(v) and Π ∗ 2(G) = ∏ uv∈E(G) εG(u)εG(v), where εG(v) is the eccentricity of vertex v in graph G and εG(v) = (εG(v)) . In this paper, we present some bounds of the multiplicative Zagreb eccentricity indices of Cartesian product graphs by means of some invariants of the factors and supply some exact expressions of Π1 and Π ∗ 2 indices of some composite graphs, such as the join, disjunction, symmetric difference and composition of graphs, respectively.
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