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In the paper, we establish an inequality involving the gamma and digamma functions and use it to prove the negativity and monotonicity of a function involving the gamma and digamma functions.

经典分析与常微分方程 · 数学 2016-06-30 Feng Qi , Bai-Ni Guo

In this article we introduce and study a class of finite groups for which the orders of normal subgroups satisfy a certain inequality. It is closely connected to some well-known arithmetic classes of natural numbers.

群论 · 数学 2018-05-31 Marius Tărnăuceanu

In this note we introduce and characterize a class of finite groups for which the element orders satisfy a certain inequality. This is contained in some well-known classes of finite groups.

群论 · 数学 2018-05-24 Marius Tărnăuceanu

In this paper we conjecture the stability and vanishing of a large piece of the unstable rational cohomology of SL_n Z, of mapping class groups, and of Aut(F_n).

几何拓扑 · 数学 2014-08-12 Thomas Church , Benson Farb , Andrew Putman

In this article, we study the properties of a class of functional spaces which arise from the investigation of nonlinear differential equations. We establish some integral inequalities then by applying these inequalities, we prove some…

泛函分析 · 数学 2023-10-11 Kamal N. Soltanov , Ugur Sert

Jensen's operator inequality for convexifiable functions is obtained. This result contains classical Jensen's operator inequality as a particular case. As a consequence, a new refinement and a reverse of Young's inequality is given.

The paper investigates the stability properties of restrictions of irreducible representations of the symmetric group to the hyperoctahedral subgroup. A stability result is obtained, analogous to the classical Murnaghan theorem on the…

表示论 · 数学 2026-04-22 Sergey Davydov

The main purpose of the present article is to give some new Hilbert's sum type inequalities, which in special cases yield the classical Hilbert's inequalities. Our results provide some new estimates to these types of inequalities.

综合数学 · 数学 2020-02-20 Chang-Jian Zhao , Wing Sum Cheung

The construction of Bell inequalities based on Platonic and Archimedean solids (Quantum 4 (2020), 293) is generalized to the case of orbits generated by the action of some finite groups. A number of examples with considerable violation of…

量子物理 · 物理学 2021-12-01 Katarzyna Bolonek-Lasoń , Piotr Kosiński

This paper deals with stability of a certain class of fractional order linear and nonlinear systems. The stability is investigated in the time domain and the frequency domain. The general stability conditions and several illustrative…

动力系统 · 数学 2011-04-08 Ivo Petras

We develop a general framework for using duality to "transfer" stability results for a functional inequality to its dual inequality. As an application, we prove a stability bound for the Hardy-Littlewood-Sobolev inequality, which is related…

泛函分析 · 数学 2016-09-06 Eric A. Carlen

In this paper we prove some exponential inequalities involving the sinc function. We analyze and prove inequalities with constant exponents as well as inequalities with certain polynomial exponents. Also, we establish intervals in which…

经典分析与常微分方程 · 数学 2019-10-15 Marija Rasajski , Tatjana Lutovac , Branko Malesevic

Some Tur\'an type inequalities for Struve functions of the first kind are deduced by using various methods developed in the case of Bessel functions of the first and second kind. New formulas, like Mittag-Leffler expansion, infinite product…

经典分析与常微分方程 · 数学 2017-07-14 Árpád Baricz , Saminathan Ponnusamy , Sanjeev Singh

Some mathematical inequalities among various weighted means are studied. Inequalities on weighted logarithmic mean are given. Besides, the gap in Jensen's inequality is studied as a convex function approach. Consequently, some non-trivial…

经典分析与常微分方程 · 数学 2022-11-08 Shigeru Furuichi , Kenjiro Yanagi , Hamid Reza Moradi

In this work, new inequalities connected with the Steffensen's integral inequality for s-convex functions are proved

经典分析与常微分方程 · 数学 2016-04-08 Mohammad W. Alomari

The aim of this article is to give some improvements of Jordan-Steckin and Becker-Stark inequalities discussed in [1].

经典分析与常微分方程 · 数学 2018-02-28 Marija Nenezic , Ling Zhu

In this paper, we investigate some hyperstability results, inspired by the concept of Ulam stability, for the following functional equations: \begin{equation} \varphi(x+y)+\varphi(x-y)=2\varphi(x)+2\varphi(y) \end{equation} \begin{equation}…

泛函分析 · 数学 2024-10-15 Abderrahman Baza , Mohamed Rossafi , Mohammed Mouniane

The main purpose of this paper is to investigate the stability problem of some functional equations that appear in the characterization problem of information measures.

经典分析与常微分方程 · 数学 2013-07-04 Eszter Gselmann , Gyula Maksa

We study the qualitative stability of two classes of Sobolev inequalities on Riemannian manifolds. In the case of positive Ricci curvature, we prove that an almost extremal function for the sharp Sobolev inequality is close to an extremal…

微分几何 · 数学 2024-01-30 Francesco Nobili , Ivan Yuri Violo

We give a Jensen operator inequality for strongly convex functions. As a corollary, we improve operator Holder-McCarthy inequality under suitable conditions.

泛函分析 · 数学 2017-02-07 H. R. Moradi , R. Naseri