Results 61 to 70 of about 664 (120)

Coefficient bounds for q-convex functions related to q-Bernoulli numbers

Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica
The main objective of this paper is to present and investigate a subclass 𝒞(b, q) of q-convex functions in the unit disk that is defined by the q-Bernoulli numbers.
Breaz Daniel, Orhan Halit, Arıkan Hava, Cotˆırlă Luminiţa-Ioana   +3 more
doaj   +1 more source

Sharpness Estimation of Hankel Determinants and Logarithmic Coefficients for a Family of Analytic Functions Related to a Lung-Shaped Domain

Mathematics
This investigation introduces a novel family of univalent analytic functions subordinate to lung-shaped domains within the open unit disk. Through rigorous application of subordination theory and systematic analysis, we establish coefficient bounds for ...
Mohamed A. Mamon, Shams Alyusof, Rabab Alyusof, Alaa H. El-Qadeem   +3 more
doaj   +1 more source

Coefficient Bounds for a New Subclass of Meromorphic Multivalent Functions with Higher Derivatives Obtained from Bessel Function

مجلة بغداد للعلوم
The goal of this paper is to introduce a new subclass of meromorphic multivalent functions with higher derivatives inside a punctured open unit disk U*, by generalizing the Bessel function.
Ali Musaddak Delphi
doaj   +1 more source

Sufficiency Conditions for a Class of Convex Functions Connected with Tangent Functions Associated with the Combination of Babalola Operators and Binomial Series

Mathematics
In this paper, we create a new subclass of convex functions given with tangent functions applying the combination of Babalola operators and Binomial series.
Sheza M. El-Deeb, Luminita-Ioana Cotîrlă   +1 more
doaj   +1 more source

Sharp Coefficient Bounds for Starlike Functions Associated with Cosine Function

Axioms
Let Scos* denote the class of normalized analytic functions f in the open unit disk D satisfying the subordination zf′(z)f(z)≺cosz. In the first result of this article, we find the sharp upper bounds for the initial coefficients a3, a4 and a5 and the ...
Rashid Ali, Mohsan Raza, Teodor Bulboacă   +2 more
doaj   +1 more source

Coefficient Bounds and Fekete-Szego inequalities for A class of Bazilevic type functions associated with new differential operator

Journal of Kufa for Mathematics and Computer, 2019
We generalized a class of Bazilevic type functions as defined in the open unit disk associated with a differential operator satisfying some subordination conditions. As well as, we obtained coefficient bounds and Fekete Szego bounds for functions in this
Abdul Rahman S. Juma, Mushtaq S. Abdulhussain, Saba N. Al-khafaji   +2 more
doaj   +1 more source

Coefficient bounds for convex functions of bounded type [PDF]

Proceedings of the American Mathematical Society, 1988
A normalized univalent function is called convex of bounded type if the curvature of the curve bounding the image domain of the unit disc lies between two fixed positive numbers. Sharp bounds for the modulus of the second and the third Taylor coefficient of such functions are derived.
openaire   +2 more sources

Coefficient Bounds for Certain Subclasses of m-Fold Symmetric Biunivalent Functions

Journal of Mathematics, 2015
We consider two new subclasses SΣmα,λ and SΣmβ,λ of Σm consisting of analytic and m-fold symmetric biunivalent functions in the open unit disk U. Furthermore, we establish bounds for the coefficients for these subclasses and several related classes are ...
Şahsene Altınkaya, Sibel Yalçın
doaj   +1 more source

Bounds on the Fourier coefficients of the weighted sum function [PDF]

Information Processing Letters, 2007
We estimate Fourier coefficients of a Boolean function which has recently been introduced in the study of read-once branching programs. Our bound implies that this function has an asymptotically ``flat'' Fourier spectrum and thus implies several lower bounds of its various complexity measures.
openaire   +4 more sources

Bounded Subset Selection With Noninteger Coefficients

, 2004
Publication in the conference proceedings of EUSIPCO, Viena, Austria ...
Masoud Alghoniemy, Ahmed H. Tewfik
openaire   +2 more sources