B. Venkateswarlu, P. Reddy, S. Sridevi, Vaishnavy Sujatha
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A Certain Subclass of Analytic Functions with Negative Coefficients Defined by Gegenbauer Polynomials
Abstract In this paper, we introduce a new subclass of analytic functions with negative coefficients defined by Gegenbauer polynomials. We obtain coefficient bounds, growth and distortion properties, extreme points and radii of starlikeness, convexity and close-to-convexity for functions belonging to the class TSλm(γ,e,k,v)TS_\lambda ^m(\gamma ,e,k,v). Furthermore, we obtained the Fekete-Szego problem for this class.