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相关论文: Some Normality Criteria for Families of Holomorphi…

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In this paper, as an application of Zalcman's lemma in $\mathbb{C}^n$, we give a sufficient condition for normality of holomorphic functions of several complex variables, which generalizes previous known one-dimensional criterion of A.J.…

复变函数 · 数学 2023-03-21 P. V. Dovbush

In this paper, by studying the famous theorem of Pang and Zalcman, we find a normal family and obtain a result, which is an improvement of Pang and Zalcman's theorem in some sense. Meanwhile, several examples are provided to show that our…

复变函数 · 数学 2014-08-29 Feng Lü , Junfeng Xu , Hongxun Yi

In this paper, we present several necessary and sufficient conditions for a logharmonic mapping to be normal i.e., we establish Marty's criterion, Zalcman-Pang lemma and the Lohwater-Pommerenke theorem for logharmonic mappings, along with…

复变函数 · 数学 2025-05-26 Molla Basir Ahamed , Sanju Mandal

In this paper, we prove two normality criteria for a family of meromorphic functions. The first criterion extends a result of Fang and Zalcman[Normal families and shared values of meromorphic functions II, Comput. Methods Funct. Theory,…

复变函数 · 数学 2014-12-30 Kuldeep Singh Charak , Virender Singh

Zalcman's Lemma makes significant applications in normal families, complex dynamics and related problems in complex analysis. In the present paper, we are devoted to generalizing the classical Zalcman's lemma to complex Lie groups by means…

复变函数 · 数学 2025-12-09 Xianjing Dong , Yanda Lv

In this article, we prove some normality criteria for a family of meromorphic functions having zeros with some multiplicity. Our main result involves sharing of a holomorphic function by certain differential polynomials. Our results…

复变函数 · 数学 2024-02-20 Gopal Datt , Yuntong Li , Poonam Rani

Let ${\cal F}$ be a family of meromorphic functions on a domain $D$. We present a quite general sufficient condition for ${\cal F}$ to be a normal family. This criterion contains many known results as special cases. The overall idea is that…

复变函数 · 数学 2017-10-17 Andreas Schweizer

In this paper, we obtained some normality criteria for families of holomorphic functions. Which generalizes some results of Fang, Xu, Chen and Hua.

复变函数 · 数学 2013-04-02 Gopal Datt , Sanjay Kumar Pant

In this paper, we study the concepts of normal functions and $\varphi$-normal functions in the framework of planar harmonic mappings. We establish the harmonic mapping counterpart of the well-known Zalcman-Pang lemma and as a consequence,…

复变函数 · 数学 2025-06-24 Nikhil Bharti , Nguyen Van Thin

In this article, we give a Zalcman type renormalization result for the quasinormality of a family of holomorphic functions on a domain in $\mathbb{C}^n$ that takes values in a complete complex Hermitian manifold.

复变函数 · 数学 2024-02-20 Gopal Datt , Sanjay Kumar

In this paper we continue our earlier investigations on normal families of meromorphic functions\cite{CS2}. Here, we prove some value distribution results which lead to some normality criteria for a family of meromorphic functions involving…

复变函数 · 数学 2015-09-25 Kuldeep Singh Charak , Shittal Sharma

In this paper we generalize a result of Ye, Pang and Yang[12] on the normality of a family of holomorphic curves in $P^N(\mathbb{C})$. Further we obtain a normality criterion for family of meromorphic functions that partially share…

复变函数 · 数学 2024-11-05 Sonam Mehta , Kuldeep Singh Charak

In this paper, besides a counterexample to Bloch's principle, normality criteria leading to counterexamples to the converse of Bloch's principle in several complex variables are proved. Some Picard-type theorems and their corresponding…

复变函数 · 数学 2022-09-12 Kuldeep Singh Charak , Rahul Kumar

A fundamental result of Lappan [Comment. Math. Helv. \textbf{49} (1974), 492-495.] states that a meromorphic function $f$ in the unit disk $\mathbb{D}$ is normal if and only if its spherical derivative is bounded on a five-point subset $E…

复变函数 · 数学 2026-02-17 Molla Basir Ahamed , Sanju Mandal , Nguyen Van Thin

A harmonic mapping $f=h+\overline{g}$ in $\mathbb{D}$ is $\varphi$-normal if $f^{\#}(z)=\mathcal{O}(|\varphi(z)|), \text{ as } |z|\to 1^-,$ where $f^{\#}(z)={(|h'(z)|+|g'(z)|)}/{(1+|f(z)|^2)}.$ In this paper, we establish several sufficient…

复变函数 · 数学 2024-08-13 Nisha Bohra , Gopal Datt , Ritesh Pal

In this article we prove some normality criteria for a family of meromorphic functions which involves sharing of a non-zero value by certain differential monomials generated by the members of the family. These results generalizes some of…

复变函数 · 数学 2024-02-20 Gopal Datt , Sanjay Kumar

In this paper we prove some normality criteria for a family of meromorphic functions concerning shared analytic functions, which extend or generalized some result obtained by Y. F. Wang, M. L. Fang~\cite{WF} and J. Qui, T. Zhu ~\cite{QZ}.

复变函数 · 数学 2019-06-10 Sanjay Kumar , Poonam Rani

In this paper, we prove normality criteria for families of meromorphic functions involving sharing of a holomorphic function by a certain class of differential polynomials. Results in this paper extends the works of different authors…

复变函数 · 数学 2015-04-01 Virender Singh , Kuldeep Singh Charak

In this paper, we prove two normality criteria for families of some functions concerning shared values, the results generalize those given by Hu and Meng. Some examples are given to show the sharpness of our results.

复变函数 · 数学 2014-08-28 Xiaobin Zhang , Junfeng Xu

In this article, we prove a normality criterion for a family of meromorphic functions which involves sharing of holomorphic functions. Our result generalizes some of the results of H. H. Chen, M. L. Fang and M. Han, Y. Gu.

复变函数 · 数学 2024-02-20 Gopal Datt , Sanjay Kumar
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