a Department of Mathematics, State University of New York, College at Brockport, Brockport, NY 14420, USA b Department of Mathematics, Babes-Bolyai University, 3400 Cluj-Napoca, Romania
Abstract:
Briot-Bouquet differential subordinations play a prominent role in the theory of differential subordinations. In this article we consider the dual problem of Briot-Bouquet differential superordinations. Let β and γ be complex numbers, and let Ω be any set in the complex plane C. The function p analytic in the unit disk U is said to be a solution of the Briot-Bouquet differential superordination if