Results 31 to 40 of about 365,170 (335)

Subclasses of p-Valent Functions Associated with Linear q-Differential Borel Operator

open access: yesMathematics, 2023
The aim of the present paper is to introduce and study some new subclasses of p-valent functions by making use of a linear q-differential Borel operator.We also deduce some properties, such as inclusion relationships of the newly introduced classes and ...
Adriana Cătaş   +2 more
doaj   +1 more source

On the characterization properties of certain hypergeometric functions in the open unit disk

open access: yesJournal of Inequalities and Applications, 2022
Our purpose in the present investigation is to study certain geometric properties such as the close-to-convexity, convexity, and starlikeness of the hypergeometric function z 1 F 2 ( a ; b , c ; z ) $z{}_{1}F_{2}(a;b,c;z)$ in the open unit disk.
Deepak Bansal   +3 more
doaj   +1 more source

Doubly close-to-convex functions

open access: yesJournal of Mathematical Analysis and Applications, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Dorff, Michael   +2 more
openaire   +2 more sources

Coefficient inequalities for Janowski type close-to-convex functions associated with Ruscheweyh Derivative Operator

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2019
The aim of this paper is tointroduce a new subclasses of the Janowski type close-to-convex functionsdefined by Ruscheweyh derivative operator and obtain coefficient boundsbelonging to this class.
Öznur Özkan Kılıç
doaj   +1 more source

Normalized generalized Bessel function and its geometric properties

open access: yesJournal of Inequalities and Applications, 2022
The normalization of the generalized Bessel functions U σ , r $\mathrm{U}_{\sigma,r}$ ( σ , r ∈ C ) $(\sigma,r\in \mathbb{C}\mathbbm{)}$ defined by U σ , r ( z ) = z + ∑ j = 1 ∞ ( − r ) j 4 j ( 1 ) j ( σ ) j z j + 1 $$\begin{aligned} \mathrm{U}_{\sigma,r}
Hanaa M. Zayed, Teodor Bulboacă
doaj   +1 more source

Global Monge-Ampere equation with asymptotically periodic data [PDF]

open access: yes, 2015
Let $u$ be a convex solution to $\det(D^2u)=f$ in $\mathbb R^n$ where $f\in C^{1,\alpha}(\mathbb R^n)$ is asymptotically close to a periodic function $f_p$.
Teixeira, Eduardo V., Zhang, Lei
core   +1 more source

COEFFICIENT BOUNDS FOR CERTAIN SUBCLASSES OF QUASI-CONVEX FUNCTIONS ASSOCIATED WITH CARLSON-SHAFFER OPERATOR [PDF]

open access: yesJournal of Mechanics of Continua and Mathematical Sciences
Let Υ denote the class of functions 𝜒(𝜉) of the form 𝜒(𝜉) = 𝜉 + ∑ 𝑎𝑛∞𝑛=2 𝜉𝑛 which are analytic in the open unit disc Δ = { 𝜉 ∈ ℂ: |𝜉| < 1 }. In recent times investigating the properties of several existing and new subclasses of quasi-convex functions ...
R. Sathish Srinivasan   +3 more
doaj   +1 more source

Geometric properties of Wright function [PDF]

open access: yesMathematica Bohemica, 2018
In the present paper, we investigate certain geometric properties and inequalities for the Wright function and mention a few important consequences of our main results. A nonlinear differential equation involving the Wright function is also investigated.
Sudhananda Maharana   +2 more
doaj   +1 more source

Assessing non-convex value functions for the optimal control of stochastic differential equations

open access: yesResults in Control and Optimization, 2022
Solving the optimal control of stochastic differential equations (SDEs) using the dynamic programming method requires writing the problem in terms of the so-called value function. This paper presents conditions to assure that the value function is convex
Elmer Lévano   +2 more
doaj   +1 more source

On Some Problems of Strongly Ozaki Close-to-Convex Functions

open access: yesJournal of Function Spaces, 2020
The purpose of the current paper is to investigate some geometric properties of the class FOν,γ, called strongly Ozaki close-to-convex functions, such as strongly starlikeness and close-to-convexity.
Z. Maleki   +3 more
semanticscholar   +1 more source

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