A note on Bazilevič functions.
Let be analytic functions in the unit disk . For the authors consider the differential subordination and the differential equation of the Briot-Bouquet type:
MSC 2010: 30C45The main object of this article is to introduce sufficient conditions of univalency for a class of analytic functions with finitely many coefficients defined by approximate functions due to Suffridge on the unit disk of the complex plane whose image is saddle-shaped. Sandwich theorem is also discussed.