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A continuous solution of an algebraic equation with holomorphic almost periodic coefficients is also almost periodic.

复变函数 · 数学 2007-05-23 V. Britik , S. Favorov

Considering the class of almost periodic functions in the Stepanov sense we extend and generalize the results of the first author [4]. as well as the results of L. Leindler [3] and P. Chandra [1,2].

经典分析与常微分方程 · 数学 2012-12-06 Wlodzimierz Lenski , Bogdan Szal

In this paper, we introduce the study of the Bohr phenomenon for a quasi-subordination family of functions, and establish the classical Bohr's inequality for the class of quasisubordinate functions. As a consequence, we improve and obtain…

复变函数 · 数学 2019-04-01 Seraj A. Alkhaleefah , Ilgiz R Kayumov , Saminathan Ponnusamy

We prove that almost periodicity in the sense of distributions coincides with almost periodicity with respect to Stepanov's metric for the class of subharmonic functions in a horizontal strip. We also prove that Fourier coefficients of…

复变函数 · 数学 2007-05-23 S. Favorov , A. Rakhnin

The notions of almost periodicity in the sense of Weyl and Besicovitch of the order p are extended to holomorphic functions on a strip. We prove that the spaces of holomorphic almost periodic functions in the sense of Weyl for various…

复变函数 · 数学 2007-05-23 S. Favorov , O. Udodova

We approximate a chain recurrent dynamical system by periodic dynamical systems. This is similar to the well known Bohr theorem on approximation of almost periodic functions by periodic functions.

动力系统 · 数学 2008-04-05 Vladimir Azarin

The main aim of this note is to introduce the notion of an almost anti-periodic function in Banach space. We prove some characterizations for this class of functions, investigating also its relationship with the classes of anti-periodic…

泛函分析 · 数学 2019-03-15 Marko Kostić , Daniel Velinov

In this paper, we introduce several various classes of $c$-almost periodic type functions and their Stepanov generalizations, where $c\in {\mathbb C}$ and $|c|=1.$ We also consider the corresponding classes of $c$-almost periodic type…

泛函分析 · 数学 2020-05-25 M. T. Khalladi , M. Kostić , M. Pinto , A. Rahmani , D. Velinov

Recently the present authors established refined versions of Bohr's inequality in the case of bounded analytic functions. In this article, we state and prove a generalization of these results in a reformulated "distance form" version and…

复变函数 · 数学 2021-03-25 Saminathan Ponnusamy , Ramakrishnan Vijayakumar , Karl-Joachim Wirths

In this paper, we relate the notions of remote almost periodicity and quasi-asymptotical almost periodicity; in actual fact, we observe that a remotely almost periodic function is nothing else but a bounded, uniformly continuous…

经典分析与常微分方程 · 数学 2021-07-08 Marko Kostic , Vipin Kumar

In this paper, we analyze multi-dimensional Besicovitch almost periodic type functions. We clarify the main structural properties for the introduced classes of Besicovitch almost periodic type functions, explore the notion of…

泛函分析 · 数学 2022-02-23 Marko Kostić

The main objective of this paper is twofold. We first show that if the doubly-weighted Bohr spectrum of an almost periodic function exists, then it is either empty or coincides with the Bohr spectrum of that function. Next, we investigate…

偏微分方程分析 · 数学 2010-12-16 Toka Diagana

The Bohr compactification is a well known construction for (topological) groups and semigroups. Recently, this notion has been investigated for arbitrary structures in \cite{har_kun:bohr_discrete} where the Bohr compactification is defined,…

泛函分析 · 数学 2025-03-12 Salvador Hernández

In this paper, we will discuss the notion of almost orthogonality in a functional sequence.Especially, we will define a few sequences of almost orthogonal polynomials which can be used successfully for modeling of electronic systems which…

数值分析 · 数学 2010-07-22 Predrag Rajkovic , Sladjana Marinkovic

A $q$-analogue of the multiple gamma functions is introduced, and is shown to satisfy the generalized Bohr-Morellup theorem. Furthermore we give some expressions of these function.

q-alg · 数学 2016-09-08 Michitomo Nishizawa

We demonstrate that, in certain cases, quantization and the classical limit provide functors that are "almost inverse" to each other. These functors map between categories of algebraic structures for classical and quantum physics,…

数学物理 · 物理学 2024-01-17 Benjamin H. Feintzeig

Shen and Zhang (2021) showed that almost periodicity naturally arises in the spectral representation of discrete-time $p$-adic self-similar processes with stationary increments. In this paper, we study several notions of almost periodicity…

概率论 · 数学 2026-05-19 Yi Shen , Zhenyuan Zhang

In this note we communicate some important remarks about the concepts of almost periodic time scales and almost periodic functions on time scales that are proposed by Wang and Agarwal in their recent papers (Adv. Difference Equ. (2015)…

经典分析与常微分方程 · 数学 2016-07-28 Yongkun Li

We have defined almost separable space. We show that like separability, almost separability is $c$ productive and converse also true under some restrictions. We establish a Baire Category theorem like result in Hausdorff, Pseudocompacts…

一般拓扑 · 数学 2020-02-13 Sagarmoy Bag , Ram Chandra Manna , Sourav Kanti Patra

We give a new proof of a classical theorem on approximation of continuous functions on totally real sets

复变函数 · 数学 2008-05-23 Bo Berndtsson