Results 1 to 10 of about 404 (62)

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

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

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

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

Results on a certain class of analytic functions associated with Chebyshev polynomial

open access: yesScientific African, 2023
In this work, it was established that Chebyshev polynomial of the second kind belongs to the class of functions with positive real part. The convolution of the Chebyshev polynomial and modified sigmoid function was established to also give functions ...
M.O. Oluwayemi   +1 more
doaj   +1 more source

Subordination results for a class of analytic functions

open access: yesMoroccan Journal of Pure and Applied Analysis, 2021
In this paper, we derive several subordination results and integral means result for certain class of analytic functions with complex order defined by means of q-differential operator. Some interesting corollaries and consequences of our results are also
Aouf M. K.   +2 more
doaj   +1 more source

Applications of differential subordination and superordination theorems to fluid mechanics involving a fractional higher-order integral operator

open access: yesAlexandria Engineering Journal, 2021
The paper aims to study differential subordination and superordination preserving properties for certain analytic multivalent functions within the open unit disk related to a novel generalized fractional derivative operator for higher-order derivatives ...
J. Morais, H.M. Zayed
doaj   +1 more source

Estimate of third Hankel determinant for a subfamily of analytic functions

open access: yesAnnals of the West University of Timisoara: Mathematics and Computer Science, 2023
In this article, our aim is to study analytic functions related with Salagean operator and associated with the right half of the lemniscate of Bernoulli. We find the estimates of the third Hankel determinant for new family of analytic functions.
Shah Syed Ghoos Ali   +4 more
doaj   +1 more source

Fekete-Szegö functional for a class of non-Bazilevic functions related to quasi-subordination

open access: yesDemonstratio Mathematica, 2023
In this article, we study the Fekete-Szegö functional associated with a new class of analytic functions related to the class of bounded turning by using the principle of quasi-subordination.
Shah Syed Ghoos Ali   +6 more
doaj   +1 more source

Estimation of coefficient bounds for a subclass of Sakaguchi kind functions mapped onto various domains

open access: yesConcrete Operators, 2023
In this article, we define a new subclass of analytic functions ℛ(t,δ){\mathcal{ {\mathcal R} }}\left(t,\delta ) in the open unit disk D{\mathbb{D}} associated with the petal-shaped domain.
Aarthy B., Keerthi B. Srutha
doaj   +1 more source

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