Results 1 to 10 of about 1,315,000 (325)

Convex and Starlike Functions Defined on the Subclass of the Class of the Univalent Functions $S$ with Order $2^{-r}$ [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2022
In this paper, some conditions have been improved so that the function $g(z)$ is defined as $g(z)=1+\sum_{k\ge 2}^{\infty}a_{n+k}z^{n+k}$, which is analytic in unit disk $U$, can be in more specific subclasses of the $S$ class, which is the most ...
İsmet Yıldız   +2 more
doaj   +1 more source

A New Operator for Meromorphic Functions

open access: yesMathematics, 2022
Let Σ be the class of functions f(z) of the form f(z)=1z+∑k=0∞akzk, which are analytic in the punctured disk. Using the differentiations and integrations, new operator Dnf(z) is introduced for f(z)∈Σ.
Hatun Özlem Güney   +2 more
doaj   +1 more source

ANALYTIC FUNCTIONS OF INFINITE ORDER IN HALF-PLANE

open access: yesПроблемы анализа, 2022
J. B. Meles (1979) considered entire functions with zeros restricted to a finite number of rays. In particular, it was proved that if 𝑓 is an entire function of infinite order with zeros restricted to a finite number of rays, then its lower order ...
K. G. Malyutin   +2 more
doaj   +1 more source

Normality of Composite Analytic Functions and Sharing an Analytic Function

open access: yesFixed Point Theory and Applications, 2010
A result of Hinchliffe (2003) is extended to transcendental entire function, and an alternative proof is given in this paper. Our main result is as follows: let be an analytic function, a family of analytic functions in a domain , and a ...
Xiao Bing, Yuan Wenjun, Wu Qifeng
doaj   +2 more sources

Rate of interpolation of analytic functions with regularly decreasing coefficients by simple partial fractions [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика, 2023
We consider the problems of multiple interpolation of analytic functions $f(z)=f_0+f_1z+\dots$ in the unit disk with node $z=0$ by means of simple partial fractions (logarithmic derivatives of algebraic polynomials) with free poles and with all poles on ...
Komarov, Mikhail Anatol'evich
doaj   +1 more source

A note on approximation of continuous functions on normed spaces

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2020
Let $X$ be a real separable normed space $X$ admitting a separating polynomial. We prove that each continuous function from a subset $A$ of $X$ to a real Banach space can be uniformly approximated by restrictions to $A$ of functions, which are analytic ...
M.A. Mytrofanov, A.V. Ravsky
doaj   +1 more source

A Class of Quadrature Rules for Complex Cauchy Principal Value Integrals [PDF]

open access: yesInternational Journal of Mathematical, Engineering and Management Sciences, 2023
This article is fully devoted to the numerical approximation of Cauchy-type integrals in the complex plane. A class of degree eight quadrature rules is formulated from a family of Gauss-type two-point rules based on the method of extrapolation. The basic
Arup Kumar Saha   +2 more
doaj   +1 more source

Analytic Error Function and Numeric Inverse Obtained by Geometric Means

open access: yesStats, 2023
Using geometric considerations, we provided a clear derivation of the integral representation for the error function, known as the Craig formula. We calculated the corresponding power series expansion and proved the convergence.
Dmitri Martila, Stefan Groote
doaj   +1 more source

Integral Criteria for Weighted Bloch Functions

open access: yesJournal of Mathematics, 2021
The present manuscript gives analytic characterizations and interesting technique that involves the study of general ϖ-Besov classes of analytic functions by the help of analytic ϖ-Bloch functions.
A. El-Sayed Ahmed, M. A. Bakhit
doaj   +1 more source

The Lerch Zeta Function II. Analytic Continuation [PDF]

open access: yes, 2010
This is the second of four papers that study algebraic and analytic structures associated with the Lerch zeta function. In this paper we analytically continue it as a function of three complex variables.
Apostol T. M.   +7 more
core   +1 more source

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