Certain Subclasses of Analytic Functions Associated with Generalized Telephone Numbers

The goal of this article is to contemplate coefficient estimates for a new class of analytic functions <i>f</i> associated with generalized telephone numbers to originate certain initial Taylor coefficient estimates and Fekete–Szegö inequality for <i>f</i> in the new function...

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Main Authors: Gangadharan Murugusundaramoorthy, Kaliappan Vijaya
Format: Article
Language:English
Published: MDPI AG 2022-05-01
Series:Symmetry
Subjects:
Online Access:https://www.mdpi.com/2073-8994/14/5/1053
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author Gangadharan Murugusundaramoorthy
Kaliappan Vijaya
author_facet Gangadharan Murugusundaramoorthy
Kaliappan Vijaya
author_sort Gangadharan Murugusundaramoorthy
collection DOAJ
description The goal of this article is to contemplate coefficient estimates for a new class of analytic functions <i>f</i> associated with generalized telephone numbers to originate certain initial Taylor coefficient estimates and Fekete–Szegö inequality for <i>f</i> in the new function class. Comparable results have been attained for the function <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mi>f</mi><mrow><mo>−</mo><mn>1</mn></mrow></msup><mo>.</mo></mrow></semantics></math></inline-formula> Further application of our outcomes to certain functions demarcated by convolution products with certain normalized analytic functions in the open unit disk are specified, and we obtain Fekete–Szegö variations for this new function class defined over Poisson and Borel distribution series.
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spelling doaj.art-aae09241f4fc473cb36dc1022e9f91f92023-11-23T13:20:38ZengMDPI AGSymmetry2073-89942022-05-01145105310.3390/sym14051053Certain Subclasses of Analytic Functions Associated with Generalized Telephone NumbersGangadharan Murugusundaramoorthy0Kaliappan Vijaya1School of Advanced Sciences, Vellore Institute of Technology, Vellore 632014, Tamilnadu, IndiaSchool of Advanced Sciences, Vellore Institute of Technology, Vellore 632014, Tamilnadu, IndiaThe goal of this article is to contemplate coefficient estimates for a new class of analytic functions <i>f</i> associated with generalized telephone numbers to originate certain initial Taylor coefficient estimates and Fekete–Szegö inequality for <i>f</i> in the new function class. Comparable results have been attained for the function <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mi>f</mi><mrow><mo>−</mo><mn>1</mn></mrow></msup><mo>.</mo></mrow></semantics></math></inline-formula> Further application of our outcomes to certain functions demarcated by convolution products with certain normalized analytic functions in the open unit disk are specified, and we obtain Fekete–Szegö variations for this new function class defined over Poisson and Borel distribution series.https://www.mdpi.com/2073-8994/14/5/1053analytic functionsconvex functionsstarlike functionssubordinationHadamard productFekete–Szegö inequality
spellingShingle Gangadharan Murugusundaramoorthy
Kaliappan Vijaya
Certain Subclasses of Analytic Functions Associated with Generalized Telephone Numbers
Symmetry
analytic functions
convex functions
starlike functions
subordination
Hadamard product
Fekete–Szegö inequality
title Certain Subclasses of Analytic Functions Associated with Generalized Telephone Numbers
title_full Certain Subclasses of Analytic Functions Associated with Generalized Telephone Numbers
title_fullStr Certain Subclasses of Analytic Functions Associated with Generalized Telephone Numbers
title_full_unstemmed Certain Subclasses of Analytic Functions Associated with Generalized Telephone Numbers
title_short Certain Subclasses of Analytic Functions Associated with Generalized Telephone Numbers
title_sort certain subclasses of analytic functions associated with generalized telephone numbers
topic analytic functions
convex functions
starlike functions
subordination
Hadamard product
Fekete–Szegö inequality
url https://www.mdpi.com/2073-8994/14/5/1053
work_keys_str_mv AT gangadharanmurugusundaramoorthy certainsubclassesofanalyticfunctionsassociatedwithgeneralizedtelephonenumbers
AT kaliappanvijaya certainsubclassesofanalyticfunctionsassociatedwithgeneralizedtelephonenumbers