中文
相关论文

相关论文: Operator inequalities associated with the Kantrovi…

200 篇论文

In this paper we achieve some new Hadamard type inequalities using elementary well known inequalities for functions whose first derivatives absolute values are s-geometrically and geometrically convex. And also we get some applications for…

经典分析与常微分方程 · 数学 2013-02-06 Mevlut Tunc , Ibrahim Karabayir

In this article, a series of new inequalities involving the $q$-numerical radius for $n\times n$ tridiagonal, and anti-tridiagonal operator matrices has been established. These inequalities serve to establish both lower and upper bounds for…

泛函分析 · 数学 2025-01-14 Satyajit Sahoo , Narayan Behera

Several inequalities for eigenvalues involving convex combinations and compressions are given. These inequalities are matrix version of the basic convexity inequality f((a+b)/2) < (f(a)+f(b))/2.

算子代数 · 数学 2007-05-23 Jean-Christophe Bourin

We show the following result: Let $A$ be a positive operator satisfying $0<m{{\mathbf{1}}_{\mathcal{H}}}\le A\le M{{\mathbf{1}}_{\mathcal{H}}}$ for some scalars $m,M$ with $m<M$ and $\Phi $ be a normalized positive linear map, then \[\Phi…

泛函分析 · 数学 2018-03-05 H. R. Moradi , I. H. Gümüş , Z. Heydarbeygi

The main aim of this study is to introduce statistical approximation properties of (p; q)-Szasz Mirakjan Kantorovich operators with the help of the Korovkin type statistical approximation theorem. Rates of statistical convergence by means…

经典分析与常微分方程 · 数学 2016-04-19 Bhausaheb R. Sontakke , Amjad Shaikh

Let $T$ be a bounded linear operator on a complex Hilbert space $\mathscr{H}.$ We obtain various lower and upper bounds for the numerical radius of $T$ by developing the Euclidean operator radius bounds of a pair of operators, which are…

泛函分析 · 数学 2023-08-21 Suvendu Jana , Pintu Bhunia , Kallol Paul

In this paper, we establish some Simpson type inequalities for functions whose third derivatives in the absolute value are h-convex and (\alpha,m)-convex, respectively.

经典分析与常微分方程 · 数学 2012-10-17 Wenjun Liu

We establish several Poincar\'e--Sobolev type inequalities for the Lapalce--Beltrami operator $\Delta_g$ in the hyperbolic space $\mathbb H^n$ with $n\geq 5$. These inequalities could be seen as the improved second order Poincar\'e…

泛函分析 · 数学 2018-05-08 Van Hoang Nguyen

Using works of T.~Ando and L.~Gurvits, the well-known theorem of P.R.~Halmos concerning the existence of unitary dilations for contractive linear operators acting on Hilbert spaces recast as a result for $d$-tuples of contractive Hilbert…

泛函分析 · 数学 2024-08-21 Douglas Farenick

The Hardy-Littlewood-Polya inequality of majorization is extended for the {\omega}-m-star-convex functions to the framework of ordered Banach spaces. Several open problems which seem of interest for further extensions of the…

经典分析与常微分方程 · 数学 2022-07-19 Geanina Maria Lachescu , Ionel Roventa

We establish a general operator parallelogram law concerning a characterization of inner product spaces, get an operator extension of Bohr's inequality and present several norm inequalities. More precisely, let ${\mathfrak A}$ be a…

算子代数 · 数学 2012-03-22 Mohammad Sal Moslehian

In this work, an operator superquadratic function (in operator sense) for positive Hilbert space operators is defined. Several examples with some important properties together with some observations which are related to the operator…

泛函分析 · 数学 2019-12-17 M. W. Alomari

Mond and Pecaric proposed a powerful method, namd as MP method, to deal with operator inequalities. However, this method requires a real-valued function to be convex or concave, and the normalized positive linear map between Hilbert spaces.…

泛函分析 · 数学 2024-04-19 Shih-Yu Chang

We prove some refinements of an inequality due to X. Zhan in an arbitrary complex Hilbert space by using some results on the Heinz inequality. We present several related inequalities as well as new variants of the Corach--Porta--Recht…

泛函分析 · 数学 2012-03-21 Cristian Conde , Mohammad Sal Moslehian , Ameur Seddik

In this study, we obtain some new integral inequalities for different classes of convex functions by using some elementary inequalities and classical inequalities like general Cauchy inequality and Minkowski inequality.

经典分析与常微分方程 · 数学 2012-02-10 M. Emin Ozdemir , Alper Ekinci , Ahmet Ocak Akdemir

We introduce and study a family of integral operators in the Kantorovich sense for functions acting on locally compact topological groups. We obtain convergence results for the above operators with respect to the pointwise and uniform…

泛函分析 · 数学 2014-08-26 Gianluca Vinti , Luca Zampogni

In this paper, we analyze the convergence behavior of Hermite-type sampling Kantorovich operators in the context of mixed norm spaces. We prove certain direct approximation theorems, including the uniform convergence theorem, the…

泛函分析 · 数学 2025-06-04 Puja Sonawane , A. Sathish Kumar

A mapping M(t) is considered to obtain some preliminary results and a new trapezoidal form of Fejer inequality related to the h-convex functions. Furthermore the obtained results are applied to achieve some new inequalities in connection…

泛函分析 · 数学 2019-02-19 M. Rostamian Delavar , S. S. Dragomir

In this paper, we introduce the notion of conditional $h$-convex functions and we prove an operator version of the Jensen inequality for conditional $h$-convex functions. Using this type of functions, we give some refinements for Ky-Fan's…

泛函分析 · 数学 2022-10-11 Ismail Nikoufar , Davuod Saeedi

In this paper, we aim to establish a range of numerical radius inequalities. These discoveries will bring us to a recently validated numerical radius inequality and will present numerical radius inequalities that exhibit enhanced precision…

泛函分析 · 数学 2024-10-07 M. H. M. Rashid