2024 : 11 : 23
Ali Shokri Shokri

Ali Shokri Shokri

Academic rank: Professor
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Education: PhD.
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Faculty: 1
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Research

Title
Subordination method for the estimation of certain subclass of analytic functions defined by the q-derivative operator
Type
JournalPaper
Keywords
Analytic functions, Bi-univalent functions, Subordination method, q-derivative operator
Year
2022
Journal Journal of Function Spaces
DOI
Researchers Hormoz Rahmatan ، Ali Shokri Shokri ، Hijaz Ahmad ، Thongchai Botmart

Abstract

In this paper, we investigate an interesting class of analytic and biunivalent functions in the open unit disk Δ which is defined using the q-derivative operator. We apply the subordination method to the functional of coefficients problem. Furthermore, we obtain the bounds of the certain functional of coefficients for functions in the class H q Σðλ, βÞ, for real and complex parameters. Also, an estimation for the initial Taylor and Maclaurin coefficients of functions in H q Σðλ, αÞ was given.