Results 41 to 50 of about 10,555,595 (364)

Applications of q-Hermite Polynomials to Subclasses of Analytic and Bi-Univalent Functions

open access: yesFractal and Fractional, 2022
In mathematics, physics, and engineering, orthogonal polynomials and special functions play a vital role in the development of numerical and analytical approaches.
Caihuan Zhang   +5 more
semanticscholar   +1 more source

Coefficients and Fekete–Szegö Functional Estimations of Bi-Univalent Subclasses Based on Gegenbauer Polynomials

open access: yesMathematics, 2023
Subclasses of analytic and bi-univalent functions have been extensively improved and utilized for estimating the Taylor–Maclaurin coefficients and the Fekete–Szegö functional.
Abdulmtalb Hussen, Abdelbaset Zeyani
doaj   +1 more source

Second Hankel Determinant for the Subclass of Bi-Univalent Functions Using q-Chebyshev Polynomial and Hohlov Operator

open access: yesFractal and Fractional, 2022
The q-derivative and Hohlov operators have seen much use in recent years. First, numerous well-known principles of the q-derivative operator are highlighted and explained in this research.
Isra Al-shbeil   +2 more
semanticscholar   +1 more source

On the Univalence Criterion of a General Integral Operator

open access: yesJournal of Inequalities and Applications, 2008
In this paper we considered an general integral operator and three classes of univalent functions for which the second order derivative is equal to zero.
H. Özlem Güney, Daniel Breaz
doaj   +2 more sources

Remark on functions with all derivatives univalent

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1980
An attractive conjecture is discounted for the class of normalized univalent functions whose derivatives are also univalent.
M. Lachance
doaj   +1 more source

On convolutions of slanted half-plane mappings

open access: yesJournal of Taibah University for Science, 2021
The convolution of convex harmonic univalent functions in the unit disk, unlike analytic functions, may not be convex or even univalent. The main purpose of this work is to develop previous work involving the convolution of convex harmonic functions ...
Elif Yaşar
doaj   +1 more source

Coefficient Estimates and Fekete-Szegö Functional Inequalities for a Certain Subclass of Analytic and Bi-Univalent Functions

open access: yesAxioms, 2022
The present paper introduces a new class of bi-univalent functions defined on a symmetric domain using Gegenbauer polynomials. For functions in this class, we have derived the estimates of the Taylor–Maclaurin coefficients, a2 and a3, and the Fekete ...
Mohamed Illafe, A. Amourah, M. Mohd
semanticscholar   +1 more source

Univalent functions maximizing Re[f(ζ1)+f(ζ2)]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1996
We study the problem maxh∈Sℜ[h(z1)+h(z2)] with z1,z2 in Δ. We show that no rotation of the Koebe function is a solution for this problem except possibly its real rotation, and only when z1=z¯2 or z1,z2 are both real, and are in a neighborhood of the x ...
Intisar Qumsiyeh Hibschweiler
doaj   +1 more source

Applications of (M,N)-Lucas Polynomials on a Certain Family of Bi-Univalent Functions

open access: yesMathematics, 2022
In the current article, making use of certain operator, we initiate and explore a certain family WΣ(λ,γ,σ,δ,α,β,p,q;h) of holomorphic and bi-univalent functions in the open unit disk D.
A. Wanas, Luminiţa-Ioana Cotîrlǎ
semanticscholar   +1 more source

Nonvanishing Meromorphic Univalent Functions [PDF]

open access: yesProceedings of the American Mathematical Society, 1988
This note studies the best constants s s such that the function k ( z ) = z + 2 + 1 / z k(z) = z + 2 + 1/z solves the linear coefficient problems max Re ⁡ { s
Abu-Muhanna, Yusuf, Schober, Glenn
openaire   +2 more sources

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