Certain Subclasses of Multivalent Prestarlike Functions with Negative Coefficients

The object of the present paper is to investigate coefficient estimates for functions belonging to the subclasses Rγ [α, β ] and C p γ [α, β ] of p-valent γ -prestarlike functions of order α and type β with negative coefficients. We obtain extreme points, distortion theorems, integral operators and radii of starlikeness and convexity for functions belonging to the classes Rγ [α, β ] and C γ [α, β ] . We also obtain several results for the modified Hadamard products of functions belonging to the classes Rγ [α, β ] and C p γ [α, β ] .