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We prove a new type of pointwise estimate of the Kalamajska-Mazya-Shaposhnikova type, where sparse averaging operators replace the maximal operator. It allows us to extend the Gagliardo-Nirenberg interpolation inequality to all…

泛函分析 · 数学 2024-03-13 Karol Lesnik , Tomas Roskovec , Filip Soudsky

We consider a sequence of composite Bernstein operators and the quadrature formulae associated with them. Upper bounds for the approximation error of continuous functions and for the approximation of integrals of continuous functions are…

经典分析与常微分方程 · 数学 2014-02-12 Heiner Gonska , Ioan Raşa

In this paper we prove a parabolic version of the Littlewood-Paley inequality for the operators of the type $\phi(-\Delta)$, where $\phi$ is a Bernstein function. As an application, we construct an $L_p$-theory for the stochastic…

泛函分析 · 数学 2013-02-21 Ildoo Kim , Kyeong-Hun Kim , Panki Kim

The main objective of this paper is to present Ostrowski's inequality for a broader class of functions and to propose a refinement to the classical version of it. The original Ostrowski's inequality can be stated as follows "If…

综合数学 · 数学 2025-08-05 Angshuman R. Goswami

In this paper we prove a L\'evy-Ottaviani type of property for the Bernoulli process defined on an interval. Namely, we show that under certain conditions on functions $(a_i)_{i=1}^{n}$ and for independent Bernoulli random variables…

概率论 · 数学 2019-11-14 Witold Bednorz , Rafał Martynek

We study the Mercer inequality and its operator extension for superquadratic functions. In particular, we give a more general form of the Mercer inequality by replacing some constants by positive operators. As some consequences, our results…

泛函分析 · 数学 2024-03-27 Mohsen Kian , Zainab Peymani Mazraj

We prove inequalities on symmetric tensor sums of positive definite operators. In particular, we prove multivariable operator inequalities inspired by generalizations to the well-known Hlawka and Popoviciu inequalities. As corollaries, we…

泛函分析 · 数学 2014-11-18 Wolfgang Berndt , Suvrit Sra

Let $k$ be a field of characteristic zero, let $R$ be the ring of formal power series in $n$ variables over $k$ and let $D(R,k)$ be the ring of $k-$linear differential operators in $R$. If $M$ is a finitely generated $D(R,k)-$module then…

交换代数 · 数学 2017-08-31 Peyman Ghahremani

This study is an example of a solid connection between fractional analysis and inequality theory, and includes new inequalities of the P\'{o}lya-Szeg% \"{o}-Chebyshev type obtained with the help of Generalized Proportional Fractional…

综合数学 · 数学 2020-06-09 Saad Ihsan Butt , Ahmet Ocak Akdemir , Alper Ekinci , Muhammad Nadeem

In this article, we proved upper bounds for numerical radius of bounded linear operator and product of operators which generalize and improve existing inequalities. We also obtain a numerical radius inequality of invertible operator using…

泛函分析 · 数学 2023-04-03 Raj Kumar Nayak

In this paper, we derive the sharp improved versions of Bohr-type inequalities for the Ces\'aro operator acting on the class of bounded analytic functions defined on the unit disk $\D=\left\{z\in\C:\left|z\right|<1\right\}$. In order to…

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

We derive explicit Bernstein-type and Bennett-type concentration inequalities for matrix-valued martingale processes with unbounded observations from the Hermitian space $\mathbb{H}(d)$. Specifically, we assume that the…

概率论 · 数学 2025-02-21 Alexey Kroshnin , Alexandra Suvorikova

We prove a version of Holder's inequality with a constant for p-th roots of symmetric operator spaces of operators affiliated to a semifinite von Neumann algebra factor, and with constant equal to 1 for strongly symmetric operator spaces.

泛函分析 · 数学 2015-05-21 Ken Dykema , Anna Skripka

In this article, we achieve some general statistical approximation results for $ \lambda $-Bernstein operators in addition to some other approximation properties. We prove a statistical Voronovskaja-type approximation theorem. We also…

经典分析与常微分方程 · 数学 2019-02-25 Faruk Özger

The central problem in this technical report is the question if the classical Bernstein operator can be decomposed into nontrivial building blocks where one of the factors is the genuine Beta operator introduced by M\"uhlbach and Lupa\c{s}.…

经典分析与常微分方程 · 数学 2012-08-31 Heiner Gonska , Margareta Heilmann , Alexandru Lupaş , Ioan Raşa

Young's integral inequality is complemented with an upper bound to the remainder. The new inequality turns out to be equivalent to Young's inequality, and the cases in which the equality holds become particularly transparent in the new…

综合数学 · 数学 2008-09-11 E. Minguzzi

We introduce a new class of fully nonlinear integro-differential operators with possible nonsymmetric kernels, which includes the ones that arise from stochastic control problems with purely jump L\`evy processes. If the index of the…

经典分析与常微分方程 · 数学 2010-11-01 Yong-Cheol Kim , Ki-Ahm Lee

We present the proof of several inequalities using the technique introduced by Alexandroff, Bakelman, and Pucci to establish their ABP estimate. First, we give a new and simple proof of a lower bound of Berestycki, Nirenberg, and Varadhan…

偏微分方程分析 · 数学 2015-10-20 Xavier Cabre

In this paper we deal with free functional inequalities on the circle. There are some interesting changes as opposed to the classical case. For example, the free Poincar\'e inequality has a slight change which seems to account for the lack…

概率论 · 数学 2017-10-24 Ionel Popescu

In this paper, we derive a generalized multiplicative Hardy-Littlewood-Polya type inequality, as well as several related additive inequalities, for functions of operators in Hilbert spaces. In addition, we find the modulus of continuity of…

泛函分析 · 数学 2015-10-06 Vladyslav Babenko , Yuliya Babenko , Nadiia Kriachko