On Certain Multivalent Starlike or Convex Functions with Negative Coefficients

On a Subclass of Multivalent β-Uniformly Starlike and Convex Functions defined by a Linear Operator

AbstractIn this paper we introduce the subclass K(μ, γ, η, α, β) of β-uniformly convex and β-uniformly starlike functions which are analytic and multivalent with negative coefficients defined by using fractional calculus operators. Characterization property exhibited by the functions in the class and the results of modified Hadamard product are discussed. Connections with the popular subclasses...

Initial coefficients of starlike functions with real coefficients

The sharp bounds for the third and fourth coefficients of Ma-Minda starlike functions having fixed second coefficient are determined. These results are proved by using certain constraint coefficient problem for functions with positive real part whose coefficients are real and the first coefficient is kept fixed. Analogous results are obtained for a general class of close-to-convex functions

Some Properties of Certain Subclasses of Close-to-Convex and Quasi-convex Functions with Respect to 2k-Symmetric Conjugate Points

A Certain Subclass of Uniformly Convex and Starlike Functions with Negative Coefficients

By making use of the familiar Salagean derivatives, a systematic investigation of a certain subclass of uniformly convex and starlike functions with negative coefficients is presented. In addition to finding various coefficient bounds and a number of characterization and distortion theorems, a number of other potentially interesting properties of this class of functions are investigated. Finall...

On a subclass of multivalent analytic functions associated with an extended fractional differintegral operator

Making use of an extended fractional differintegral operator ( introduced recently by Patel and Mishra), we introduce a new subclass of multivalent analytic functions and investigate certain interesting properties of this subclass.