Results 31 to 40 of about 127 (84)

Coefficient Bounds for a Certain Family of Biunivalent Functions Defined by Gegenbauer Polynomials

open access: yesJournal of Mathematics, 2022
In the present work, by making use of Gegenbauer polynomials, we introduce and study a certain family of λ-pseudo bistarlike and λ-pseudo biconvex functions with respect to symmetrical points defined in the open unit disk. We obtain estimates for initial
Isra Al-Shbeil   +3 more
doaj   +1 more source

Fekete-Szegő Inequality for a Subclass of p-Valent Analytic Functions

open access: yesJournal of Applied Mathematics, 2013
The main object of this paper is to study Fekete-Szegő problem for the class of p-valent functions. Fekete-Szegő inequality of several classes is obtained as special cases from our results.
Mohsan Raza   +2 more
doaj   +1 more source

Initial Coefficients Estimates and Fekete–Szegö Inequality Problem for a General Subclass of Bi-Univalent Functions Defined by Subordination

open access: yesAxioms, 2023
In the present work, we aim to introduce and investigate a novel comprehensive subclass of normalized analytic bi-univalent functions involving Gegenbauer polynomials and the zero-truncated Poisson distribution. For functions in the aforementioned class,
Mohamed Illafe   +3 more
doaj   +1 more source

Fekete-Szegö Inequalities of a Subclass of Multivalent Analytic Functions

open access: yesAnnals of the West University of Timisoara: Mathematics and Computer Science, 2016
The main object of this paper is to study Fekete-Szegö problem for a certain subclass of p - valent analytic functions. Fekete-Szegö inequality of several classes are obtained as special cases from our results.
Selvaraj C.   +2 more
doaj   +1 more source

On the Fekete-Szegö problem

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2000
Let f(z)=z+a2z2+a3z3+⋯ be an analytic function in the open unit disk. A sharp upper bound is obtained for |a3−μa22| by using the classes of strongly starlike functions of order β and type α when μ≥1.
B. A. Frasin, Maslina Darus
doaj   +1 more source

Fekete-Szegö Problem for a New Class of Analytic Functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2011
We consider the Fekete-Szegö problem with complex parameter 𝜇 for the class 𝑅𝜏𝛾(𝜙) of analytic functions.
Deepak Bansal
doaj   +1 more source

Jackson Differential Operator Associated with Generalized Mittag–Leffler Function

open access: yesFractal and Fractional, 2023
Quantum calculus plays a significant role in many different branches such as quantum physics, hypergeometric series theory, and other physical phenomena.
Adel A. Attiya   +2 more
doaj   +1 more source

Q-Extension of Starlike Functions Subordinated with a Trigonometric Sine Function

open access: yesMathematics, 2020
The main purpose of this article is to examine the q-analog of starlike functions connected with a trigonometric sine function. Further, we discuss some interesting geometric properties, such as the well-known problems of Fekete-Szegö, the necessary and ...
Saeed Islam   +4 more
doaj   +1 more source

Fekete -Szego Problem for Certain Subclass of q-Difference Operator Using Quasi-Subordination

open access: yesTikrit Journal of Pure Science, 2021
In this paper , a new certain class of q-Difference Operator  with quasi-subordination is defined and  Fekete-Szego problems  for functions belongs   to the class are derived .
Abdul kader Yasin Taha   +1 more
doaj   +1 more source

The Fekete-Szegö Problem for p-Valently Janowski Starlike and Convex Functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2011
For p-valently Janowski starlike and convex functions defined by applying subordination for the generalized Janowski function, the sharp upper bounds of a functional |ap+2−μa2p+1| related to the Fekete-Szegö problem are given.
Toshio Hayami, Shigeyoshi Owa
doaj   +1 more source

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