Results 1 to 10 of about 110 (87)

On Harmonic Univalent Functions Defined by Dziok-Srivastava Operator

open access: yesTikrit Journal of Pure Science, 2022
The purpose of this work is to present a class of harmonic univalent functions defined by the Dziok-Srivastava operator. Some geometric properties like coefficients conditions, distortion theorem, convolution (Hadamard product), convex combination and ...
Mays S. Abdul Ameer   +2 more
doaj   +1 more source

Partial sums and inclusion relations for analytic functions involving (p, q)-differential operator

open access: yesOpen Mathematics, 2021
Let fk(z)=z+∑n=2kanzn{f}_{k}\left(z)=z+{\sum }_{n=2}^{k}{a}_{n}{z}^{n} be the sequence of partial sums of the analytic function f(z)=z+∑n=2∞anznf\left(z)=z+{\sum }_{n=2}^{\infty }{a}_{n}{z}^{n}.
Tang Huo   +3 more
doaj   +1 more source

A Note on Meromorphic Functions Associated With Beseel Function Defined by Hilbert Sapce Operator

open access: yesConcrete Operators, 2021
In this paper,we introduce and study a new subclass of meromorphic functions associated with a certain differential operator on Hilbert space. For this class, we obtain several properties like the coefficient inequality, growth and distortion theorem ...
Venkateswarlu B.   +3 more
doaj   +1 more source

Results on a class of analytic functions with finitely many fixed coefficients related to a generalised multiplier transformation

open access: yesScientific African, 2022
A new class of univalent functions denoted by Tm(ξ,ϖ,σ,en) is defined and studied in this work. The class of functions Tm(ξ,ϖ,σ,en) generalises certain previously introduced classes of functions in the literature.
M.O. Oluwayemi   +2 more
doaj   +1 more source

Sandwich-type results regarding Riemann-Liouville fractional integral of q-hypergeometric function

open access: yesDemonstratio Mathematica, 2023
The study presented in this article involves q-calculus connected to fractional calculus applied in the univalent functions theory. Riemann-Liouville fractional integral of q-hypergeometric function is defined here, and investigations are conducted using
Alb Lupaş Alina, Oros Georgia Irina
doaj   +1 more source

A new family of analytic functions associated with multiplier transformation

open access: yesScientific African, 2021
Some geometric properties of a certain univalent function in the unit disk are considered in this work and the results extend some known results in the literature.
M.O. Oluwayemi, Imran Faisal
doaj   +1 more source

On q-analogue of Janowski-type starlike functions with respect to symmetric points

open access: yesDemonstratio Mathematica, 2021
The main objective of the present paper is to define a class of qq-starlike functions with respect to symmetric points in circular domain. Some interesting results of these functions have been evaluated in this article.
Khan Muhammad Ghaffar   +4 more
doaj   +1 more source

On fixed point theorem in complete quasi-metric space under F-contraction mapping

open access: yesTikrit Journal of Pure Science, 2019
In this paper, a fixed point theorem under F-contraction mapping was considered and proved in complete quasi-metric space. This theorem was considered by Piri and Kumam in [1].
Rifaat Saad Abdul-Jabbar
doaj   +1 more source

A generalized sequential problem of Lane-Emden type via fractional calculus

open access: yesMoroccan Journal of Pure and Applied Analysis, 2020
In this paper, we combine the Riemann-Liouville integral operator and Caputo derivative to investigate a nonlinear time-singular differential equation of Lane Emden type.
Gouari Yazid   +2 more
doaj   +1 more source

Paatero’s V(k) space II

open access: yesConcrete Operators, 2022
In this article we continue our investigation of the Paatero space. We prove that the intersection of every Paatero class V(k) with every Hardy space Hp is closed in that Hp and associate singular continuous measures to elements of V(k).
Andreev Valentin V.   +2 more
doaj   +1 more source

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