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Sharp Coefficient and Hankel Problems Related to a Symmetric Domain

Authors :
Huo Tang
Adeel Ahmad
Akhter Rasheed
Asad Ali
Saqib Hussain
Saima Noor
Source :
Symmetry, Vol 15, Iss 10, p 1865 (2023)
Publication Year :
2023
Publisher :
MDPI AG, 2023.

Abstract

In the current article, we utilize the concept of subordination to establish a new subclass of analytic functions associated with a bounded domain that is symmetric about the real axis. By applying the convolution technique, we derive the necessary and sufficient condition, the radius of convexity for this recently introduced class. Furthermore, we prove the sharp upper bounds for the second-order Hankel determinants |H2,1ξ|,|H2,2ξ| and third-order Hankel determinant |H3,1ξ| for the functions ξ belonging to the newly defined class.

Details

Language :
English
ISSN :
20738994 and 10213481
Volume :
15
Issue :
10
Database :
Directory of Open Access Journals
Journal :
Symmetry
Publication Type :
Academic Journal
Accession number :
edsdoj.10213481d43446f483f213b15c76107c
Document Type :
article
Full Text :
https://doi.org/10.3390/sym15101865