Results 41 to 50 of about 5,311 (200)

The Coefficients Of Functions With Positive Real Part And Some Special Classes Of Univalent Functions. [PDF]

open access: yes, 2003
Several special classes of univalent functions f in the unit disk U are characterized by the quantity zf'(z)/ f (z) lies in a given region in the right-half plane.
M. Ali, Rosihan
core  

Bi-Univalent Function Classes Defined by Using a Second Einstein Function

open access: yes, 2022
Motivated by q-calculus, subordination principle, and the second Einstein function, we define two families of bi-univalent analytic functions on the open unit disc of the complex plane.
Alaa H. El-Qadeem   +2 more
core   +1 more source

Quasi-Convolution Properties of Analytic Function Subclasses Defined by a Generalized Binomial Operator

open access: yesUMYU Scientifica Journal
The study of analytic and univalent functions in the open unit disk has received significant attention in geometric function theory due to its vast applications across mathematics and other related disciplines.
Abdulhakeem Bolakale Bello   +4 more
doaj   +1 more source

An exact estimate of the third Hankel determinants for functions inverse to convex functions

open access: yesМатематичні Студії, 2023
Invesigation of bounds for Hankel determinat of analytic univalent functions is prominent intrest of many researcher from early twenth century to study geometric properties.
B. Rath, K. S. Kumar, D. V. Krishna
doaj   +1 more source

Subclasses of Bi-Univalent Functions Associated with Hohlov Operator [PDF]

open access: yes, 2017
The coefficients estimate problem for Taylor-Maclaurin series is still an open problem especially for a function in the subclass of bi-univalent functions.
Aini Janteng   +2 more
core   +1 more source

Univalent typoids

open access: yes, 2022
A typoid is a type equipped with an equivalence relation, such that the terms of equivalence between the terms of the type satisfy certain conditions, with respect to a given equivalence relation between them, that generalise the properties of the ...
Petrakis, Iosif
core  

Initial Coefficient Behavior of Bi-Univalent Functions Defined Through Bernoulli Polynomial Subordination

open access: yesMathematics
The study of coefficient problems for bi-univalent functions continues to play a central role in geometric function theory due to its analytical depth and wide range of applications.
Mohamed Illafe   +2 more
doaj   +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

Argument and Coefficient Estimates for Certain Analytic Functions

open access: yesMathematics, 2020
The aim of the present paper is to introduce a new class G α , δ of analytic functions in the open unit disk and to study some properties associated with strong starlikeness and close-to-convexity for the class G α , δ
Davood Alimohammadi   +3 more
doaj   +1 more source

Some Characterizations of Weighted Holomorphic Function Classes by Univalent Function Classes

open access: yesJournal of Function Spaces, 2021
Some characterizations of QK,ωp,q− type classes of holomorphic functions by Schwarzian derivatives with known conformal-type mappings are introduced in the present manuscript.
A. El-Sayed Ahmed, S. Omran
doaj   +1 more source

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