Articles with "fekete szeg" as a keyword



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Fekete-Szegö functional for a class of non-Bazilevic functions related to quasi-subordination

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Published in 2023 at "Demonstratio Mathematica"

DOI: 10.1515/dema-2022-0232

Abstract: Abstract In this article, we study the Fekete-Szegö functional associated with a new class of analytic functions related to the class of bounded turning by using the principle of quasi-subordination. We derived the coefficient estimates… read more here.

Keywords: class; fekete szeg; quasi subordination; szeg functional ... See more keywords
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Fekete Szegö theorem for a close-to-convex error function

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Published in 2019 at "Mathematica Slovaca"

DOI: 10.1515/ms-2017-0231

Abstract: Abstract By motivating the result of Ramachandran et al. [Certain results on q-starlike and q-convex error functions, Math. Slovaca, 68(2) (2018), 361–368], in this present investigation we derive the classical Fekete Szegö theorem for a… read more here.

Keywords: error; convex error; szeg theorem; close convex ... See more keywords
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Fekete-Szegö Inequalities for Some Certain Subclass of Analytic Functions Defined with Ruscheweyh Derivative Operator

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Published in 2022 at "Axioms"

DOI: 10.3390/axioms11100560

Abstract: In our present investigation, we introduce and study some new subclasses of analytic functions associated with Ruscheweyh differential operator Dr. We obtain a Fekete–Szegö inequality for certain normalized analytic function defined on the open unit… read more here.

Keywords: szeg inequalities; operator; analytic functions; fekete szeg ... See more keywords
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Coefficient-Related Studies and Fekete-Szegö Type Inequalities for New Classes of Bi-Starlike and Bi-Convex Functions

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Published in 2022 at "Symmetry"

DOI: 10.3390/sym14112263

Abstract: In this paper, we define certain families SE*(ϑ) and CE(ϑ) of holomorphic and bi-univalent functions which are defined in the open unit disk U. We establish upper bounds for the initial Taylor–Maclaurin coefficients and Fekete–Szegö… read more here.

Keywords: related studies; fekete szeg; coefficient related; type inequalities ... See more keywords