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We prove weighted $q$-variation inequalities with $2<q<\infty$ for differential and singular integral operators in higher dimensions. The vector-valued extensions of these inequalities are also given.

Classical Analysis and ODEs · Mathematics 2017-04-21 Tao Ma , José Luis Torrea , Quanhua Xu

In this paper we have studied the growth of meromorphic solutions of higher order homogeneous and non-homogeneous linear difference equations with entire and meromorphic coefficients. We have extended and improved some results of Zhou and…

Complex Variables · Mathematics 2022-01-06 Chinmay Ghosh , Subhadip Khan , Anirban Bandyopadhyay

This paper is devoted to the uniqueness problem of the power of a meromorphic function with its differential polynomial sharing a set. Our result will extend a number of results obtained in the theory of normal families. Some questions are…

Complex Variables · Mathematics 2022-09-15 Abhijit Banerjee , Bikash Chakraborty

In this note it is shown that two key results on transcendental singularities for meromorphic functions of finite lower order have refinements which hold under the weaker hypothesis that the logarithmic derivative has finite lower order.

Complex Variables · Mathematics 2018-07-26 J. K. Langley

We prove a new bound on the number of shared values of distinct meromorphic functions on a compact Riemann surface, explain a mistake in a previous paper on this topic, and give a survey of related questions.

Complex Variables · Mathematics 2022-06-08 Zhiguo Ding , Michael E. Zieve

In this paper, we study uniqueness problems for entire functions that partially share two values with their higher-order derivatives. The results obtained here both improve and generalize the related results of Li and Yi \cite{LYi}, L\"{u}…

Complex Variables · Mathematics 2025-12-10 Junfeng Xu , Sujoy Majumder , Lata Mahato

The purpose of the paper is to rectify a series of errors occurred in [2], [17], [20] for a particular situation. To get a fruitful solution and to overcome the issue, we introduce a new form of set sharing namely restricted set sharing,…

Complex Variables · Mathematics 2021-03-02 Abhijit Banerjee , Arpita Kundu

In this article we study the value distribution theory for the first derivative of the logarithmic derivative of Dirichlet $L$-functions, generalizing certain results of Ihara, Matsumoto et. al. related to ``$M$-functions" for $\sigma = $…

Number Theory · Mathematics 2026-01-09 Samprit Ghosh

In this paper we have mainly focused on the uniqueness of two meromorphic functions under the realm of two shared sets problem with certain restrictions which in turn improve the results of { P. Sahoo and H. Karmakar, Uniqueness theorems…

Complex Variables · Mathematics 2020-09-01 Abhijit Banerjee , Saikat Bhattacharyya

Nevanlinna's second main theorem is a far-reaching generalisation of Picard's Theorem concerning the value distribution of an arbitrary meromorphic function f. The theorem takes the form of an inequality containing a ramification term in…

Complex Variables · Mathematics 2013-09-16 Rodney Halburd , Risto Korhonen

We establish the meromorphic continuation of certain multiple zeta functions of generalized Hurwitz type. From this meromorphic continuation, we obtain explicit formulas for their (derivative) values at nonpositive integers along a given…

Number Theory · Mathematics 2025-07-28 Simon Rutard

In the paper, concerning a question of Yi [23], we study general criterion for the uniqueness of an L-function and a general meromorphic function. Our results improve and extend all the existing results in this direction [23, 18, 17, 4] to…

Complex Variables · Mathematics 2025-12-22 Sanjay Mallick , Ripan Saha

The main purpose of this paper is to derive some subordination and superordination results involving certain of integral operator for meromorphic univalent functions in the punctured open unit disk. Several sandwich-type results are also…

Complex Variables · Mathematics 2016-12-23 Khudair Hussain

In this research notes, we investigate some remain problems in the uniqueness of meromorphic function. Using some deep results of Yamanoii, we obtain some results in this notes.

Complex Variables · Mathematics 2025-03-18 Xiaohuang Huang

With the help of the notion of weighted sharing of sets, this paper dealt with the question posed by \emph{Yi} \cite{Yi-SC-1994} regarding the uniqueness of meromorphic functions concerning three set sharing. A result has been proved which…

Complex Variables · Mathematics 2020-05-13 Molla Basir Ahamed

The purpose of this article is to deal with the multiple values and uniqueness problem of meromorphic mappings from $\mathbb{C}^{m}$ into the complex projective space $\mathbb{P}^{n}(\mathbb{C})$ sharing fixed and moving hypersurfaces. We…

Complex Variables · Mathematics 2017-02-24 Tingbin Cao , Hongzhe Cao

In this article, we study the growth of meromorphic solutions of linear delay-differential equation of the form \begin{equation*} \sum_{i=0}^{n}\sum_{j=0}^{m}A_{ij}(z)f^{(j)}(z+c_{i})=F(z), \end{equation*}% where $A_{ij}(z)$ $(i=0,1,\ldots…

Complex Variables · Mathematics 2022-12-27 Abdelkader Dahmani , Benharrat Belaïdi

In this paper, we study the uniqueness of the shift of meromorphic functions. We prove: Let $f$ be a non-constant meromorphic function satisfying $\rho_{2}(f)<1$, let $\eta$ be a non-zero complex number, and let $a,b,c\in\hat{S}(f)$ be…

Complex Variables · Mathematics 2024-01-18 XiaoHuang Huang

This paper investigates the value distribution and growth properties of linear total differential polynomials $\mathcal{L}_k[D]f$ for meromorphic functions in several complex variables $\mathbb{C}^n$. By extending the classical Milloux…

Complex Variables · Mathematics 2026-01-22 Molla Basir Ahamed , Vasudevarao Allu

The uniqueness problems on transcendental meromorphic or entire functions sharing at least two values with their derivatives or linear differential polynomials have been studied and many results have been obtained. In this paper, we study a…

Complex Variables · Mathematics 2014-05-08 Qi Han , Hongxun Yi