Results 11 to 20 of about 434,859 (315)
On Coefficient Estimates for a Certain Class of Analytic Functions [PDF]
Mathematics, 2022 In this paper, we consider a subclass SQ of normalized analytic functions f satisfying ℜf′(z)>1/2. For the functions in the class SQ, we determine upper bounds for a number of coefficient estimates, among which are initial coefficients, the second Hankel
Dorina Răducanu
doaj +2 more sources
Faber Polynomial Coefficient Estimates for Meromorphic Bi-Starlike Functions [PDF]
International Journal of Mathematics and Mathematical Sciences, 2013 We consider meromorphic starlike univalent functions that are also bi-starlike and find Faber polynomial coefficient estimates for these types of functions. A function is said to be bi-starlike if both the function and its inverse are starlike univalent.
Samaneh G. Hamidi +2 more
doaj +2 more sources
Coefficient estimates for the model with memory. [PDF]
, 2021 Coefficient estimates for the model with memory.
Marco De Nardi (7364453) +7 more
core +1 more source
On the Ninth Coefficient of the Inverse of a Convex Function
Mathematics, 2021 We consider the inverse function z=g(w)=w+b2w2+⋯ of a normalized convex univalent function w=f(z)=z+a2z2+⋯ on the unit disk in the complex plane. So far, it is known that |bn|≤1 for n=2,3,⋯,8.
Toshiyuki Sugawa
doaj +1 more source
Axioms, 2023 The purpose of this article is to introduce and study certain families of normalized certain functions with symmetric points connected to Gegenbauer polynomials.
Yahya Almalki +4 more
doaj +1 more source
Development of Novel Subclasses for Bi-Univalent Functions
ASM 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.
MUNIRAH ROSSDY +2 more
doaj +1 more source
Coefficients Inequalities for the Bi-Univalent Functions Related to q-Babalola Convolution Operator
Fractal and Fractional, 2023 This article defines a new operator called the q-Babalola convolution operator by using quantum calculus and the convolution of normalized analytic functions in the open unit disk.
Isra Al-shbeil +2 more
doaj +1 more source
Initial Coefficients Upper Bounds for Certain Subclasses of Bi-Prestarlike Functions
Axioms, 2023 In this article, we introduce and study the behavior of the modules of the first two coefficients for the classes NΣ(γ,λ,δ,μ;α) and NΣ*(γ,λ,δ,μ;β) of normalized holomorphic and bi-univalent functions that are connected with the prestarlike functions.
Tareq Hamadneh +5 more
doaj +1 more source
Coefficient estimates for families of bi-univalent functions defined by Ruscheweyh derivative operator [PDF]
Mathematica Moravica, 2021 The main purpose of this manuscript is to find upper bounds for the second and third Taylor-Maclaurin coefficients for two families of holomorphic and bi-univalent functions associated with Ruscheweyh derivative operator.
Bulut Serap, Kareem Wanas Abbas
doaj +1 more source