ON SUBCLASSES OF p-VALENT FUNCTIONS DEFINED BY A DERIVATIVE OPERATOR

Abstract

In the present paper, we study certain subclasses ( ) μ λ γ β α δ , , , , , q Tp and ( ) μ λ γ β α δ , , , , , q Cp of analytic p-valent functions with negative coefficients in the unit disc. The results presented here include the modified Hadamard product, the radii of close-to-convexity, starlikeness and convexity for functions belonging to the above mentioned subclasses.