Results 1 to 10 of about 5,400,161 (122)

Finiteness of meromorphic functions on an annulus sharing four values regardless of multiplicity [PDF]

open access: yesMathematica Bohemica, 2020
This paper deals with the finiteness problem of meromorphic funtions on an annulus sharing four values regardless of multiplicity. We prove that if three admissible meromorphic functions $f_1$, $f_2$, $f_3$ on an annulus $\mathbb A({R_0})$ share four ...
Duc Quang Si, An Hai Tran
doaj   +4 more sources

Fuzzy Differential Subordination for Meromorphic Function Associated with the Hadamard Product

open access: yesAxioms, 2023
This paper is related to fuzzy differential subordinations for meromorphic functions. Fuzzy differential subordination results are obtained using a new operator which is the combination Hadamard product and integral operator for meromorphic function.
Sheza M. El-Deeb, Alina Alb Lupaş
doaj   +2 more sources

Subclasses of Meromorphic Functions Associated with Convolution [PDF]

open access: yesJournal of Inequalities and Applications, 2009
Several subclasses of meromorphic functions in the unit disk are introduced by means of convolution with a given fixed meromorphic function. Subjecting each convoluted-derived function in the class to be subordinated to a given normalized convex ...
Ravichandran V   +3 more
doaj   +4 more sources

A note on the location of poles of meromorphic functions [PDF]

open access: yesJournal of Hyperstructures, 2021
A meromorphic function on an open set D contained in the finite complex plane C is of the form of the ratio betweentwo analytic functions defined on D with denominator not identically zero.
Sanjib Kumar Datta, Tanchar Molla
doaj   +1 more source

On a Harry–Dym-Type Hierarchy: Trigonal Curve and Quasi-Periodic Solutions

open access: yesMathematics, 2022
Resorting to the characteristic polynomial of Lax matrix for a Harry–Dym-type hierarchy, we define a trigonal curve, on which appropriate vector-valued Baker–Akhiezer function and meromorphic function are introduced.
Qi Feng, Lihua Wu
doaj   +1 more source

Meromorphic Functions That Share One Finite Value CM or IM with Their First Derivative [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2012
In this paper we shall prove that if a non-constant meromorphic function and its derivative share the value CM (IM) and if ( ), then either or ( ), where and are constants. These results give improvement and extension of the following result of Gundersen:
Amer H. H. Al-Khaladi
doaj   +1 more source

An Inequality of Meromorphic Vector Functions and Its Application

open access: yesAbstract and Applied Analysis, 2011
Firstly, an inequality for vector-valued meromorphic functions is established which extend a corresponding inequality of Milloux for meromorphic scalar-valued function (1946).
Wu Zhaojun, Chen Yuxian
doaj   +1 more source

Some inequalities on meromorphic function and its derivative concerning small functions in an angular domain

open access: yesJournal of Inequalities and Applications, 2016
In this paper, we investigate the value distribution of a meromorphic function and its derivative concerning small functions in an angular domain and obtain some inequalities for a meromorphic function in an angular domain, which improve the previous ...
Hong Yan Xu   +3 more
doaj   +1 more source

Extreme problems in the space of meromorphic functions of finite order in the half plane. II

open access: yesМатематичні Студії, 2020
The extremal problems in the space of meromorphic functions of order $\rho>0$ in upper half-plane are studed. The method for studying is based on the theory of Fourier coefficients of meromorphic functions.
K.G. Malyutin, A.A. Revenko
doaj   +1 more source

On a Certain Subclass of Meromorphic Functions Defined by a New Linear Differential Operator

open access: yesJournal of Mathematical and Fundamental Sciences, 2017
In this article, a new linear differential operator I^k (L_s^a (a_l,b_m )f(z)) is defined by using the Hadamard product of the q-hypergeometric function and a function related to the Hurwitz-Lerch zeta function. By using this linear differential operator,
Khalid Challab   +2 more
doaj   +1 more source

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