Certain Family of Integral Operators Associated with Multivalent Functions Preserving Subordination and Superordination

M K Aouf, A O Mostafa, H M Zayed

In this paper, we obtain subordination, superordination and sandwich-type results regarding to certain family of integral operators defined on the space of multivalent functions in the open unit disk. Also, an application of the subordination and superordination theorems to the Gauss hypergeometric function are considered. These new results generalize some previously well-known sandwich-type theorems.