In this paper, we compute the formulae for the third Zagreb indices and its coindices for two classes of graphs such as edge corona product graph, double graph and kth iterated double graph.

—The graphs which are used in this paper simple, finite and undirected. The first second Zagreb indices for every non-adjacent vertices (also called coindices) dependent only on the degrees interspersed operations of addition multiplication, respectively, vertices. number edges incident vertex v a graph G is degree two u if it’s no common edge between them. In paper, we found coindices chains e...

Expressions for the Zagreb indices and coindices of the total graph, semi-total point graph and of semi-total line graph of subdivision graphs in terms of the parameters of the parent graph are obtained, thus generalizing earlier existing results.

a topological index of a molecular graph g is a numeric quantity related to g which isinvariant under symmetry properties of g. in this paper we obtain the randić, geometricarithmetic,first and second zagreb indices , first and second zagreb coindices of tensorproduct of two graphs and then the harary, schultz and modified schultz indices of tensorproduct of a graph g with complete graph of ord...