Results 171 to 180 of about 3,690,143 (190)

Löwner chains and a subclass of bi-univalent functions

Georgian Mathematical Journal, 2022
Abstract In this paper, we give characterization of subclasses of bi-univalent functions and also consider bi-starlike functions on the unit disk in ℂ in terms of Löwner chains.
Shahram Najafzadeh, Hakimeh Haji, Hormoz Rahmatan   +2 more
openaire   +1 more source

On the Coefficients of Several Classes of Bi-Univalent Functions

Acta Mathematica Scientia, 2014
Abstract In this paper, we investigate the bounds of the coefficients of several classes of bi-univalent functions. The results presented in this paper improve or generalize the recent works of other authors.
Zhigang Peng
exaly   +2 more sources

Two Inclusive Subfamilies of bi-univalent Functions

International Journal of Neutrosophic Science
The aim of this article is to establish two new and qualitative subfamilies F(ε, κ, ℵ) and G(ε, κ, ℵ) of biunivalent functions. For functions in these subfamilies, we determine the first two Maclaurin coefficient estimations |C2| and |C3|, and address the Fekete–Szeg¨o problem. Additionally, we mention some corollaries related to the main results.
Tariq Tariq, Ala Amourah, Jamal Salah, Feras Yousef   +3 more
openaire   +1 more source

Coefficient estimates for a subclass of analytic bi-univalent functions

2018
Summary: In this work, we use the Faber polynomial expansions to find upper bounds for the coefficients of analytic bi-univalent functions in subclass \( \Sigma(\tau,\gamma,\phi)\) which is defined by subordination conditions in the open unit disk \(\mathbb{U}\). In certain cases, our estimates improve some of those existing coefficient bounds.
Adegani, Ebrahim, Bulut, SERAP, Zireh, Ahmad   +2 more
openaire   +2 more sources

MEROMORPHIC BI-UNIVALENT AND SUBORDINATE FUNCTIONS

Scientific works/Elmi eserler, 1996
Fethiye Müge Sakar, Seher Melike Aydoğan   +1 more
openaire   +1 more source

A New Comprehensive Subclass of Analytic Bi-Univalent Functions Related to Gegenbauer Polynomials

Symmetry, 2023
Ala Amourah, Tariq Al-Hawary, Abdullah Alsoboh   +2 more
exaly  

Initial Coefficient Bounds for Bi-Univalent Functions Related to Gregory Coefficients

Mathematics, 2023
Teodor Bulboacă, Gangadharan Murugusundaramoorthy, K Vijaya Kaliappan   +2 more
exaly  

INITIAL COEFFICIENT ESTIMATES FOR BI-UNIVALENT FUNCTIONS

Far East Journal of Mathematical Sciences (FJMS), 2018
P. N. Kamble, M. G. Shrigan
openaire   +1 more source

Subclasses of Univalent Functions

Lecture Notes in Mathematics, 1983
Grigore Stefan Salagean
exaly  

Coefficient Estimates for a Certain Subclass of Analytic and Bi-Univalent Functions

Applied Mathematics Letters, 2012
Qing-Hua Xu, H M Srivastava
exaly