Results 1 to 10 of about 57 (56)
On Harmonic Univalent Functions Defined by Dziok-Srivastava Operator
Tikrit 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 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
Concrete 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
On q-analogue of Janowski-type starlike functions with respect to symmetric points
Demonstratio 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
Two applications of Grunsky coefficients in the theory of univalent functions
Acta Universitatis Sapientiae: Mathematica, 2023 Let S denote the class of functions f which are analytic and univalent in the unit disk 𝔻 = {z : |z| < 1} and normalized with f(z)=z+∑n=2∞αnzn{\rm{f}}\left( {\rm{z}} \right) = {\rm{z}} + \sum\nolimits_{{\rm{n = 2}}}^\infty {{\alpha _{\rm{n}}}{{\rm{z}}^{\
Obradović Milutin, Tuneski Nikola
doaj +1 more source
Certain classes of bi-univalent functions associated with the Horadam polynomials
Acta Universitatis Sapientiae: Mathematica, 2021 In this paper we consider two subclasses of bi-univalent functions defined by the Horadam polynomials. Further, we obtain coefficient estimates for the defined classes.
Orhan Halit +4 more
doaj +1 more source
Subordination results for a class of analytic functions
Moroccan 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
Concrete 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
Fekete-Szegö functional for a class of non-Bazilevic functions related to quasi-subordination
Demonstratio 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
Generalized operator for Alexander integral operator
Acta Universitatis Sapientiae: Mathematica, 2020 Let Tn be the class of functions f which are defined by a power series f(z)=z+an+1zn+1+an2zn+2+…f\left( z \right) = z + {a_{n + 1}}{z^{n + 1}} + {a_n}2{z^{n + 2}} + \ldots for every z in the closed unit disc 𝕌¯\bar {\mathbb{U}}. With m different boundary
Güney H. Özlem, Owa Shigeyoshi
doaj +1 more source