Hankel determinant for certain new classes of analytic functions associated the activation functions

Autor: YueJuan Sun, Muhammad Arif, Khalil Ullah, Lei Shi, Muhammad Imran Faisal
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Heliyon, Vol 9, Iss 11, Pp e21449- (2023)
Druh dokumentu: article
ISSN: 2405-8440
DOI: 10.1016/j.heliyon.2023.e21449
Popis: In this article, we introduce two new classes of analytic functions Jtanh and JSG which are associated with the activation functions and defined by the ratio of analytic representations of convex and starlike functions. For functions in these classes, our primary goal is to determine the sharp upper bounds of second and third Hankel determinants.
Databáze: Directory of Open Access Journals