On some differential sandwich theorems using a generalized Salagean operator and Ruscheweyh operator

In this work we define a new operator using the generalized Salagean operator and Ruscheweyh operator. Denote by DR lambda m,n the Hadamard product of the generalized Salagean operator D-lambda(m) and Ruscheweyh operator R-n, given by DR lambda m,n : A -> A, DR lambda m * f (z) = (D-lambda(m) * R-n) f (z) and A(n) = {f is an element of H(U) : f (z) = z +an+1z(n+1) + ..., z is an element of U} is the class of normalized analytic functions with A(1) = A. The purpose of this paper is to introduce sufficient conditions for subordination and superordination involving the operator DR lambda m,n and also to obtain sandwich-type results.