Certain Subclasses of Meromorphic Univalent Function Involving Differential Operator

Abstract

The main object of the present paper is to introduce the class of meromorphic univalent function K* (σ,τ,S) defined by differential operator with study some geometric properties like coefficient inequality , growth theorem and distortion theorem, radii of starlikeness and convexity of f(z) in the class K* (σ,τ,S) .Also the concept of convolution (Hadamard product) investigate and Neighborhoods of the elements of class K* (σ,τ,S) are obtained.

Keywords

• meromorphic univalent function ,differential operator,hadamard product, starlike function,convex function,neighborhood