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Title: Certain Family of Univalent Functions Based Differential Operators Involving Sigmoid Function.

Presenter: Oluwayemi Matthew

Date: Thursday, 22nd September, 2016 Time: 3 – 4:30 Pm

Venue: Main Physics Laboratory


A sigmoid function is an "S" shaped curve and a special case of the logistic function with wide applications in the fields of science and engineering. In this research work, the author investigates a subclass holomorphic univalent function in the open unit disk U using certain differential operators involving modified sigmoid function to obtain a class of normalized analytic function. Some geometric properties of the subclass such as coefficient estimates, growth and distortion, radii of starlikeness and convexity are established.