Estimates for initial coefficients of certain bi-univalent functions
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DOI: 10.2298/fil2106993m
Abstract: Estimates are obtained for the initial coefficients of a normalized analytic function f in the unit disk D such that f and the analytic extension of f-1 to D belong to certain subclasses of univalent… read more here.
Keywords: certain univalent; coefficients certain; initial coefficients; univalent functions ... See more keywords
On Sandwich-Type Results for a Subclass of Certain Univalent Functions Using a New Hadamard Product Operator
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DOI: 10.3390/sym14050931
Abstract: This paper is concerned with studying some results by introducing a new Hadamard product operator for differential subordination and superordination for certain univalent functions in the open unit disc U. Firstly, we state some basic… read more here.
Keywords: hadamard product; univalent functions; new hadamard; product operator ... See more keywords