Sigmoid Function In The Space Of Univalent Lambda Pseudo Starlike Function With Sakaguchi Type Functions

Olatunji S.O.

Olatunji S.O. Department of Mathematical Sciences, Federal University of Technology, P.M.B.704, Akure, Nigeria

Keywords: Analytic functions, Starlike function, Convex function, Bounded turning, Sub- ordination, Bazilevic function, Sigmoid function, Fekete-Szegoo Inequality.

Abstract

In this work, the sigmoid function in the space of univalent - peseudo starlike function with Sakaguchi type functions are investigated. The rst few coecient bounds for the class \ (s; t; ) were obtained. Also, the relevant connections to Fekete-Szego theorem for this class were brie y discussed. Our results serves as a new generalization in this direction and it gives birth some existing subclasses of functions.

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