SOME BASIC PROPERTIES OF ANALYTIC AND MULTIVALENT FUNCTION WITH NEGATIVE COEFFICIENTS DEFINED BY DIFFERENTIAL OPERATOR

摘要

By means of certain differential operator we introduce and investigate two subclasses £~*(p, λ, φ, δ, α) and Y £~*(p, λ, φ, δ, α) of p-valently analytic functions. The results obtained here for each of these classes. We have attempted to obtain coefficient estimate, growth and distortion theorem for the classes £~ (p, λ, φ, δ, α) and Y £~*(p, λ, φ, δ, α).