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This article improves the triangle inequality for complex numbers, using the Hermite-Hadamard inequality for convex functions. Then, applications of the obtained refinement are presented to include some operator inequalities. The operator…

Functional Analysis · Mathematics 2022-04-19 Shigeru Furuichi , Mohammad Sababheh , Hamid Reza Moradi

In this paper, we shall give an extension of operator Bellman inequality. This result is estimated via Kantorovich constant.

Functional Analysis · Mathematics 2019-05-29 Shiva Sheybani , Mohsen Erfanian Omidvar , Mahnaz Khanegir

In this paper, we study the characterization of two weight inequality for multilinear fractional maximal operators. We give a multilinear analogue of Sawyer's two weight test condition.

Classical Analysis and ODEs · Mathematics 2017-08-01 Kangwei Li , Wenchang Sun

In this paper we prove and discuss some new $\left( H_{p},weak-L_{p}\right) $ type inequalities of maximal operators of $T$ means with respect to Vilenkin systems with monotone coefficients. We also apply these results to prove a.e.…

General Mathematics · Mathematics 2025-09-25 G. Tutberidze

In this paper we consider a generalized conditional-type Holder- inequality and investigate some classic properties of multiplication conditional expectation type operators on Orlicz-spaces.

Functional Analysis · Mathematics 2013-05-14 Yousef Estaremi

We prove in this note one weight norm inequalities for some positive Bergman-type operators.

Classical Analysis and ODEs · Mathematics 2019-02-26 Benoît F. Sehba

We prove mixed inequalities for commutators of Calder\'on-Zygmund operators (CZO) with multilinear symbols. Concretely, let $m\in\mathbb{N}$ and $\mathbf{b}=(b_1,b_2,\dots, b_m)$ be a vectorial symbol such that each component $b_i\in…

Classical Analysis and ODEs · Mathematics 2021-08-23 Fabio Berra , Marilina Carena , Gladis Pradolini

Inequalities are derived for power sums of the real part and the modulus of the eigenvalues of a Schr\"odinger operator with a complex-valued potential.

Mathematical Physics · Physics 2007-05-23 Rupert L. Frank , Ari Laptev , Elliott H. Lieb , Robert Seiringer

Let $p>1$ and $1/p+1/q=1$. Consider H\"older's inequality $$ \|ab^*\|_1\le \|a\|_p\|b\|_q $$ for the $p$-norms of some trace ($a,b$ are matrices, compact operators, elements of a finite $C^*$-algebra or a semi-finite von Neumann algebra).…

Operator Algebras · Mathematics 2016-10-06 Gabriel Larotonda

Mercer inequality for convex functions is a variant of Jensen's inequality, with an operator version that is still valid without operator convexity. This paper is two folded. First, we present a Mercer-type inequality for operators without…

Functional Analysis · Mathematics 2020-03-06 H. R. Moradi , S. Furuichi , M. Sababheh

In this paper, the notion of operator means in the setting of JB-algebras is introduced and their properties are studied. Many identities and inequalities are established, most of them have origins from operators on Hilbert space but they…

Functional Analysis · Mathematics 2023-05-03 Shuzhou Wang , Zhenhua Wang

We prove several singular value inequalities for sum and product of compact operators in Hilbert space. Some of our results generalize the previous inequalities for operators. Also, applications of some inequalities are given.

Functional Analysis · Mathematics 2015-10-02 A. Taghavi , V. Darvish , H. M. Nazari , S. S. Dragomir

We give H\"older's inequalities for integral and conditional expectation involving the infinite product. Moreover, a generalized Doob maximal operator is introduced and weighted inequalities for the operator are established.

Classical Analysis and ODEs · Mathematics 2016-06-29 Wei Chen , Longbin Jia , Yong Jiao

In this paper we prove and discuss some new $\left(H_{p},L_{p}\right)$ type inequalities of maximal operators of Vilenkin-N\"orlund means with non-decreasing coefficients. We also apply these inequalities to prove strong convergence…

Classical Analysis and ODEs · Mathematics 2015-04-24 L. E. Persson , G. Tephnadze , P. Wall

We establish H\"older type inequalities for Lorentz sequence spaces and their duals. In order to achieve these and some related inequalities, we study diagonal multilinear forms in general sequence spaces, and obtain estimates for their…

Functional Analysis · Mathematics 2012-01-18 Daniel Carando , Verónica Dimant , Pablo Sevilla-Peris

The main target of this paper is to discuss operator Hermite--Hadamard inequality for convex functions, without appealing to operator convexity. Several forms of this inequality will be presented and some applications including norm and…

Functional Analysis · Mathematics 2019-08-07 Hamid Reza Moradi , Mohammad Sababheh , Shigeru Furuichi

In this article, we obtain the Strichartz estimate for the system of orthonormal functions associated with the special Hermite operator.

Functional Analysis · Mathematics 2022-03-08 Shyam Swarup Mondal , Jitendriya Swain

We give a direct proof of the operator valued Hardy-Littlewood maximal inequality for $2<p<\infty$.

Functional Analysis · Mathematics 2024-09-04 ChianYeong Chuah , Zhenchuan Liu , Tao Mei

In this note we consider weighted conditional type operators between different Orlicz spaces and generalized conditional type Holder inequality that we defined in [2]. Then we give some necessary and sufficient conditions for boundedness of…

Functional Analysis · Mathematics 2015-02-12 Yousef Estaremi

A multiple operator integral (MOI) is an indispensable tool in several branches of noncommutative analysis. However, there are substantial technical issues with the existing literature on the "separation of variables" approach to defining…

Operator Algebras · Mathematics 2023-12-27 Evangelos A. Nikitopoulos