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Refinements of some recent reverse inequalities for the celebrated Cauchy-Bunyakovsky-Schwarz inequality in 2-inner product spaces are given. Using this framework, applications for determinantal integral inequalities are also provided.

泛函分析 · 数学 2007-05-23 P. Cerone , Y. J. Cho , S. S. Dragomir , S. S. Kim

In this note we present a new proof of Sobolev's inequality under a uniform lower bound of the Ricci curvature. This result was initially obtained in 1983 by Ilias. Our goal is to present a very short proof, to give a review of the famous…

偏微分方程分析 · 数学 2021-01-21 Louis Dupaigne , Ivan Gentil , Simon Zugmeyer

The main object of this paper is to construct a new genuine Bernstein-Durrmeyer type operators which have better features than the classical one. Some direct estimates for the modified genuine Bernstein-Durrmeyer operator by means of the…

数值分析 · 数学 2018-10-17 Ana Maria Acu , P. N. Agrawal

In this note the Choquet type operators are introduced, in connection to Choquet's theory of integrability with respect to a not necessarily additive set function. Based on their properties, a quantitative estimate for the nonlinear…

经典分析与常微分方程 · 数学 2021-04-14 Sorin G. Gal , Constantin P. Niculescu

We present an inequality for tensor product of positive operators on Hilbert spaces by considering the tensor product of operators as words on certain alphabets (i.e., a set of letters). As applications of the operator inequality and by a…

泛函分析 · 数学 2015-02-23 Xaixia Chang , Vehbi E. Paksoy , Fuzhen Zhang

We extend the classical Bernstein inequality to a general setting including Schr{\"o}dinger operators and divergence form elliptic operators on Riemannian manifolds or domains. Moreover , we prove a new reverse inequality that can be seen…

偏微分方程分析 · 数学 2021-06-11 Rafik Imekraz , El Maati Ouhabaz

In this paper, we generalize several Berezin number inequalities involving product of operators. For instance, we show that if $A, B$ are positive operators and $X$ is any operator, then \begin{align*}…

泛函分析 · 数学 2018-05-22 Monire Hajmohamadi , Rahmatollah Lashkaripour , Mojtaba Bakherad

In the present article, we have given a corrigendum to our paper "Some approximation results on Bernstein-Schurer operators defined by (p,q)-integers" published in Journal of In- equalities and Applications (2015) 2015:249.

经典分析与常微分方程 · 数学 2015-11-30 M. Mursaleen , Md. Nasiruzzaman , Ashirbayev Nurgali

The local maximal inequality for the Schr\"{o}dinger operators of order $\a>1$ is shown to be bounded from $H^s(\R^2)$ to $L^2$ for any $s>\frac38$. This improves the previous result of Sj\"{o}lin on the regularity of solutions to…

偏微分方程分析 · 数学 2016-02-08 Changxing Miao , Jianwei Yang , Jiqiang Zheng

In this paper, by using Jensen's inequality and Chebyshev integral inequality, some generalizations and new refined Hardy type integral inequalities are obtained. In addition, the corresponding reverse relation are also proved.

经典分析与常微分方程 · 数学 2015-12-02 Khaled Mehrez

Simple inequalities are established for integrals of the type $\int_0^x \mathrm{e}^{-\gamma t} t^{-\nu} \mathbf{L}_\nu(t)\,\mathrm{d}t$, where $x>0$, $0\leq\gamma<1$, $\nu>-\frac{3}{2}$ and $\mathbf{L}_{\nu}(x)$ is the modified Struve…

经典分析与常微分方程 · 数学 2019-02-18 Robert E. Gaunt

In 1955, A.~Grothendieck proved a basic inequality which shows that any bounded linear operator between $L^1(\mu)$-spaces maps (Lebesgue-) dominated sequences to dominated sequences. An elementary proof of this inequality is obtained via a…

泛函分析 · 数学 2008-02-03 Haskell P. Rosenthal

Some Gruss type inequalities in semi-inner product modules over C*-algebras for n-tuples of vectors are established. Also we give their natu- ral applications for the approximation of the discrete Fourier and the Melin transforms of bounded…

算子代数 · 数学 2015-06-09 A. G. Ghazanfari , S. Soleimani

Olkin and Shepp (2005, J. Statist. Plann. Inference, vol. 130, pp. 351--358) presented a matrix form of Chernoff's inequality for Normal and Gamma (univariate) distributions. We extend and generalize this result, proving Poincare-type and…

统计方法学 · 统计学 2016-11-18 G. Afendras , N. Papadatos

Two types of Bernstein inequalities are established on the unit ball in $\mathbb{R}^d$, which are stronger than those known in the literature. The first type consists of inequalities in $L^p$ norm for a fully symmetric doubling weight on…

经典分析与常微分方程 · 数学 2026-05-25 Tomasz Beberok , Yuan Xu

The Weak Law of Large Numbers is traced chronologically from its inception as Jacob Bernoulli's Theorem in 1713, through De Moivre's Theorem, to ultimate forms due to Uspensky and Khinchin in the 1930s, and beyond. Both aspects of Jacob…

统计理论 · 数学 2013-09-26 Eugene Seneta

In this paper we obtain some operator versions of Levin-Steckin integral inequality.

泛函分析 · 数学 2020-05-12 Silvestru Sever Dragomir

In this paper, we established a new Ostrowski-type inequality involving functions of two independent variables.

经典分析与常微分方程 · 数学 2010-12-27 M. Emin Ozdemir , Ahmet Ocak Akdemir , Erhan Set

Obtaining explicit stability estimates in classical functional inequalities like the Sobolev inequality has been an essentially open question for 30 years, after the celebrated but non-constructive result of G. Bianchi and H. Egnell in…

偏微分方程分析 · 数学 2025-09-23 Jean Dolbeault

In this paper, we present generalized P\'olya-Szeg\"o type inequalities for positive invertible operators on a Hilbert space for arbitrary operator means between the arithmetic and the harmonic means. As applications, we present Operator…

泛函分析 · 数学 2020-01-07 Trung Hoa Dinh , Hamid Reza Moradi , Mohammad Sababheh