ESTIMATES OF INITIAL COEFFICIENTS FOR FUNCTIONS IN NEW SUBCLASSES OF BI-UNIVALENT FUNCTIONS DEFINED USING GENERALIZED DIFFERENTIAL OPERATOR

Print ISSN: 0972-7752 | Online ISSN: 2582-0850 | Total Downloads : 128

Abstract

We de ned a new subclass of the function class $\sigma$ in the unit disk associated with a generalized differential operator. We estimated some coefficient bounds for the functions in the de ned new subclass. As special cases, well-known results were obtained by varying parameters in the main results.

Keywords and Phrases

Coefficient bounds, bi-univalent, subclasses, differential operator.

A.M.S. subject classification

Primary 30C45, secondary 30C50.

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