Results 41 to 50 of about 3,690,143 (190)

Coefficient Estimates for a Subclass of Bi-Univalent Functions Defined by q-Derivative Operator

open access: yes, 2020
Recently, a number of features and properties of interest for a range of bi-univalent and univalent analytic functions have been explored through systematic study, e.g., coefficient inequalities and coefficient bounds. This study examines S q δ
Maslina Darus, Suhila Elhaddad
core   +1 more source

An Application of Miller–Ross-Type Poisson Distribution on Certain Subclasses of Bi-Univalent Functions Subordinate to Gegenbauer Polynomials

open access: yesMathematics, 2022
The Miller–Ross-type Poisson distribution is an important model for plenty of real-world applications. In the present analysis, we study and introduce a new class of bi-univalent functions defined by means of Gegenbauer polynomials with a Miller–Ross ...
Ala Amourah   +2 more
doaj   +1 more source

Coefficient estimates for a certain subclass of bi-univalent functions

open access: yesLe Matematiche, 2016
Summary: In the present investigation, we find estimates on the coefficients \(|a_2|\) and \(|a_3|\) for functions in the function class \(S_\Sigma(\lambda,h)\). The results presented in this paper improve or generalize the recent work of \textit{N. Magesh} and \textit{J. Yamini} [Int. Math. Forum 8, No. 25--28, 1337--1344 (2013; Zbl 1283.30030)].
Yalcin, Sibel, Altınkaya, Şahsene
openaire   +2 more sources

Bounds for a new subclass of bi-univalent functions subordinate to the Fibonacci numbers

open access: yes, 2020
In this investigation, by using a relation of subordination, we define a new subclass of analytic bi-univalent functions associated with the Fibonacci numbers.
Altinkaya, Sahsene
core   +2 more sources

Development of Novel Subclasses for Bi-Univalent Functions

open access: yesASM Science Journal, 2021
This manuscript presents the development of new subclasses for bi-univalent functions and the subclasses are closely related to Chebyshev polynomials having Al-Oboudi differential operator. The functions contained in the subclasses were used to account for the initial coefficient estimates of |a2| and |a3| .
MUNIRAH ROSSDY   +2 more
openaire   +3 more sources

Certain classes of bi-univalent functions with bounded boundary variation

open access: yes, 2017
In their pioneering work dated 2010 on the subject of bi-univalent functions, Srivastava et al. actually revived the study of the coefficient problems involving bi-univalent functions in recent years. Inspired by the pioneering work of Srivastava et Hi.,
ORHAN, Halit   +5 more
core   +1 more source

Certain classes of bi-univalent functions associated with the Horadam polynomials

open access: yes, 2021
In this paper we consider two subclasses of bi-univalent functions defined by the Horadam polynomials.
ORHAN, Halit   +9 more
core   +1 more source

New Subclasses of Bi-Univalent Functions Associated with Exponential Functions and Fibonacci Numbers

open access: yesمجلة بغداد للعلوم
Lewin discussed the class  of bi-univalent functions and obtained the bound for the second coefficient, Sakar and Wanas defined two new subclasses of bi-univalent functions and obtained upper bounds for the elementary coefficients |a2| and |a3| for ...
Majd Ayash   +3 more
doaj   +1 more source

Certain subclass of alpha-convex bi-univalent functions defined using $q$-derivative operator [PDF]

open access: yes
summary:The present investigation deals with a new subclass of alpha-convex bi-univalent functions in the unit disc $E=\left\rbrace z\colon \mid z \mid
Singh, Gurcharanjit, Singh, Gagandeep
core   +1 more source

New classes of pseudo-type bi-univalent functions

open access: yes, 2020
In this paper, we introduce and investigate two new subclasses of pseudo-type bi-univalent functions which were defined by linear combinations of analytic functions in various well known classes and the quotient of the analytic representation of ...
Guney, H. Ozlem   +1 more
core   +1 more source

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