Article ID Journal Published Year Pages File Type
471678 Computers & Mathematics with Applications 2011 8 Pages PDF
Abstract

Let AA denote the class of functions f(z)f(z) which are analytic in the open unit disk and normalized by f(0)=f′(0)−1=0f(0)=f′(0)−1=0. In this paper the expression f′(z)−1f(z)/z is studied using differential subordinations and different properties of f(z)z, as well as sufficient conditions for starlikeness and univalence of f(z)∈Af(z)∈A, are obtained. Also, several open problems are posed.

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Physical Sciences and Engineering Computer Science Computer Science (General)
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