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相关论文: Multidimensional analogues of the improved Bohr's …

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The main aim of this article is to establish a sharp improvement of the classical Bohr inequality for bounded holomorphic mappings in the polydisk $\mathbb{D}^n$.We also prove two other sharp versions of the Bohr inequality in the setting…

复变函数 · 数学 2025-12-19 Molla Basir Ahamed , Sujoy Majumder , Nabadwip Sarkar

This article is devoted to the sharp improvement of the classical Bohr inequality for bounded analytic functions defined on the unit disk. We also prove two other sharp versions of the Bohr inequality by replacing the constant term by the…

复变函数 · 数学 2020-04-21 Amir Ismagilov , Ilgiz R Kayumov , Saminathan Ponnusamy

In this paper, we first establish a version of multidimensional analogues of the refined Bohr's inequality. Then we establish two versions of multidimensional analogues of improved Bohr's inequality with initial coefficient being zero.…

复变函数 · 数学 2021-03-18 Ming-Sheng Liu , Saminathan Ponnusamy

In this article, we first establish operator-valued analogues of multidimensional refined Bohr inequality. Then we establish operator-valued analogues of multidimensional improved Bohr inequality with a certain power of the norm of the…

复变函数 · 数学 2023-08-29 Sabir Ahammed , Molla Basir Ahamed

In this paper, we study some improved and refined versions of the classical Bohr inequality applicable to the class $\mathcal{B}$, which consists of self-analytic mappings defined on the unit disk $\mathbb{D}$. First, we improve the Bohr…

复变函数 · 数学 2024-02-27 Molla Basir Ahamed , Partha Pratim Roy

Our first aim of this article is to establish several new versions of refined Bohr inequalities for bounded analytic functions in the unit disk involving Schwarz functions. Secondly, %as applications of these results, we obtain several new…

复变函数 · 数学 2024-09-17 Shanshan Jia , Ming-Sheng Liu , Saminathan Ponnusamy

The primary objective of this paper is to establish several sharp results concerning the Bohr inequality, the refined Bohr inequality, and the improved Bohr inequality for the classes of analytic functions and harmonic mappings defined on…

复变函数 · 数学 2026-03-18 Vasudevarao Allu , Raju Biswas , Rajib Mandal

In this paper, we investigates the Bohr phenomenon for holomorphic mappings $F$ from the unit ball $\mathbb{B}_X$ of a complex Banach space $X$ into the closure of the unit polydisc $\mathbb{D}^m$ within the space $\mathbb{C}^m$. First, we…

复变函数 · 数学 2025-11-25 Vasudevarao Allu , Raju Biswas , Rajib Mandal

In this paper, we give a new generalization of the Bohr inequality in refined form both for bounded analytic functions, and for sense-preserving harmonic functions with analytic part being bounded.

复变函数 · 数学 2021-04-15 Saminathan Ponnusamy , Ramakrishnan Vijayakumar

The primary objective of this paper is to establish several sharp versions of improved Bohr inequality, refined Bohr-type inequality, and refined Bohr-Rogosinski inequality for the class of $K$-quasiconformal sense-preserving harmonic…

复变函数 · 数学 2026-04-14 Raju Biswas , Rajib Mandal

We prove several improved versions of Bohr's inequality for the harmonic mappings of the form $f=h+\overline{g}$, where $h$ is bounded by 1 and $|g'(z)|\le|h'(z)|$. The improvements are obtained along the lines of an earlier work of Kayumov…

复变函数 · 数学 2017-09-27 Stavros Evdoridis , Saminathan Ponnusamy , Antti Rasila

The primary objective of this paper is to establish several sharp versions of Bohr inequalities for bounded analytic functions in the unit disk $\mathbb{D} := \{z\in\mathbb{C} : |z| < 1\}$ involving multiple Schwarz functions. Moreover, we…

复变函数 · 数学 2026-04-14 Vasudevarao Allu , Raju Biswas , Rajib Mandal

In this paper, we first obtain a refined version of the Bohr inequality of norm-type for holomorphic mappings with lacunary series on the polydisk in $\mathbb{C}^n$ under some restricted conditions. Next, we determine the refined version of…

复变函数 · 数学 2023-03-17 Sabir Ahammed , Molla Basir Ahamed

This paper is devoted to the investigation of multidimensional analogues of refined Bohr-type inequalities for bounded holomorphic mappings on the unit polydisc $\mathbb{D}^n$. We establish a sharp extension of the classical Bohr…

复变函数 · 数学 2026-01-13 Molla Basir Ahamed , Sujoy Majumder , Nabadwip Sarkar

Operator-valued multivariable Bohr type inequalities are obtained for: a class of noncommutative holomorphic functions, generalizing the analytic functions on the open unit disc; the noncommutative disc algebra and the noncommutative…

算子代数 · 数学 2007-05-23 Gelu Popescu

In this paper, a significant improvement has been achieved in the classical Bohr's inequality for the class $ \mathcal{B} $ of analytic self maps defined on the unit disk $ \mathbb{D} $. More precisely, we generalize and improve several…

复变函数 · 数学 2023-12-27 Molla Basir Ahamed , Sabir Ahammed

We investigate improved forms of the Bohr inequality, using the quantity $S_r/\pi$, for analytic selfmaps in class $\mathcal{B}$ of $\mathbb{D}$, where $S_r$ is the area measure of $\mathbb{D}_r$. We then generalize the inequality for…

复变函数 · 数学 2025-10-28 Molla Basir Ahamed , Partha Pratim Roy , Sujoy Majumder

The classical inequality of Bohr asserts that if a power series converges in the unit disk and its sum has modulus less than or equal to $1$, then the sum of absolute values of its terms is less than or equal to $1$ for the subdisk…

复变函数 · 数学 2020-06-12 Saminathan Ponnusamy , Ramakrishnan Vijayakumar , Karl-Joachim Wirths

Based on improving the classical Bohr inequality, we get in this paper some refined versions for a quasi-subordination family of functions, one of which is key to build our results. By means of these investigations, for a family of harmonic…

复变函数 · 数学 2021-03-30 Gang Liu , Saminathan Ponnusamy

The primary objective of this paper is to establish several sharp versions of improved Bohr inequalities, refined Bohr inequalities, and Bohr-Rogosinski inequalities for the class of $K$-quasiconformal sense-preserving harmonic mappings…

复变函数 · 数学 2024-11-27 Vasudevarao Allu , Raju Biswas , Rajib Mandal
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