Results 101 to 110 of about 9,723 (251)

Convex and starlike functions [PDF]

open access: yesColloquium Mathematicum, 1986
The authors exploit some results due to \textit{St. Ruscheweyh} and \textit{T. Sheil-Small} [Comment. Math. Helv. 48, 119-135 (1973; Zbl 0261.30015)] to obtain theorems which relate convex and starlike univalent functions of order \(\frac12\) with their partial sums.
Sunder Singh, Ram Babu Singh
openaire   +3 more sources

Inclusion Properties for Classes of p‐Valent Functions

open access: yesJournal of Function Spaces, Volume 2024, Issue 1, 2024.
Making use of a differential operator, which is defined here by means of the Hadamard product, we introduce classes of p‐valent functions and investigate various important inclusion properties and characteristics for these classes. Also, a property preserving integrals is considered.
B. M. Munasser   +5 more
wiley   +1 more source

Some properties of analytic functions related with Booth lemniscate

open access: yesActa Universitatis Sapientiae: Mathematica, 2018
The object of the present paper is to study of two certain subclass of analytic functions related with Booth lemniscate which we denote by ℬ𝒮 (α) and ℬ𝒦 (α). Some properties of these subclasses areconsidered.
Najmadi P., Najafzadeh Sh., Ebadian A.
doaj   +1 more source

Properties of a Linear Operator Involving Lambert Series and Rabotnov Function

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2024, Issue 1, 2024.
This work is an attempt to apply Lambert series in the theory of univalent functions. We first consider the Hadamard product of Rabotnov function and Lambert series with coefficients derived from the arithmetic function σ(n) to introduce a normalized linear operator JRα,βz.
Jamal Salah, Bao Q. Li
wiley   +1 more source

ON NORMALIZED RABOTNOV FUNCTION ASSOCIATED WITH CERTAIN SUBCLASSES OF ANALYTIC FUNCTIONS

open access: yesПроблемы анализа, 2023
In this paper, we investigate some sufficient conditions for the normalized Rabotnov function to be in certain subclasses of analytic and univalent functions. The usefulness of the results is depicted by some corollaries and examples.
S. Sumer Eker, B. ¸Seker, S. Ece
doaj  

Inclusion and Neighborhood on a Multivalent q‐Symmetric Function with Poisson Distribution Operators

open access: yesJournal of Mathematics, Volume 2024, Issue 1, 2024.
In this paper, by using Poisson distribution probability, some characteristics of analytic multivalent q‐symmetric starlike and q‐symmetric convex functions of order η are examined. Then, by utilizing the Poisson distribution and the concept of the q‐analogue Salagean integral operator, the p‐valent convergence polynomial was introduced. Furthermore, a
Ebrahim Amini   +3 more
wiley   +1 more source

On Certain Analogues of Noor Integral Operators Associated with Fractional Integrals

open access: yesJournal of Function Spaces, Volume 2024, Issue 1, 2024.
In this paper, we employ a q‐Noor integral operator to perform a q‐analogue of certain fractional integral operator defined on an open unit disc. Then, we make use of the Hadamard convolution product to discuss several related results. Also, we derive a class of convex functions by utilizing the q‐fractional integral operator and apply the inspired ...
Mojtaba Fardi   +3 more
wiley   +1 more source

Bazilevic functions of type β

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1982
In this paper, a new coefficient result for the Bazileviĉ functions of type β is obtained.
K. Inayat Noor
doaj   +1 more source

Coefficient Bounds for q‐Noshiro Starlike Functions in Conic Region

open access: yesJournal of Function Spaces, Volume 2024, Issue 1, 2024.
We present and examine a new family of analytic functions that can be described by a q‐Ruscheweyh differential operator. We discuss several novel results, including coefficient inequalities and other noteworthy properties such as partial sums and radii of starlikeness.
V. Malathi, K. Vijaya, H. Ozlem Guney
wiley   +1 more source

The radius of convexity of certain analytic functions II

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1980
In [2], MacGregor found the radius of convexity of the functions f(z)=z+a2z2+a3z3+…, analytic and univalent such that |f′(z)−1|
J. S. Ratti
doaj   +1 more source

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