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We consider in this paper two different types of the weighted geometric means of positive definite operators. We show the component-wise bijection of these geometric means and give a geometric property of the spectral geometric mean as a…

泛函分析 · 数学 2020-09-23 Sejong Kim

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

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…

泛函分析 · 数学 2022-04-19 Shigeru Furuichi , Mohammad Sababheh , Hamid Reza Moradi

A considerable amount of literature in the theory of inequality is devoted to the study of Jensen's and Young's inequality. This article presents a number of new inequalities involving the log-convex functions and the geometrically convex…

经典分析与常微分方程 · 数学 2022-02-10 Shigeru Furuichi , Hamid Reza Moradi , Supriyo Dutta

This note aims to present some reverse inequalities about the power means and Karcher mean via the Kantorovich constant and some of these have been generalized to higher power. Also, we generalize the reverse weighted arithmetic-geometric…

泛函分析 · 数学 2015-05-19 Wenshi Liao , Junliang Wu , Haisong Cao

In this article, we employ a standard convex argument to obtain new and refined inequalities related to the matrix mean of two accretive matrices, the numerical radius and the Tsallis relative operator entropy.

泛函分析 · 数学 2021-04-28 Hamid Reza Moradi , Shigeru Furuichi , Mohammad Sababheh

Some inequalities for positive linear maps on matrix algebras are given, especially asymmetric extensions of Kadison's inequality and several operator versions of Chebyshev's inequality. We also discuss well-known results around the matrix…

泛函分析 · 数学 2010-03-12 Jean-Christophe Bourin , Éric Ricard

We give a refined Young inequality which generalizes the inequality by Zou--Jiang. We also show the upper bound for the logarithmic mean by the use of the weighted geometric mean and the weighted arithmetic mean. Furthermore, we show some…

经典分析与常微分方程 · 数学 2022-03-14 Shigeru Furuichi , Mehdi Eghbali Amlashi

In \cite{PSMA}, Pal et al. introduced some weighted means and gave some related inequalities by using an approach for operator monotone functions. This paper discusses the construction of these weighted means in a simple and nice setting…

泛函分析 · 数学 2020-05-26 Mustapha Raïssouli , Shigeru Furuichi

We show that Lorentz-Finsler geometry offers a powerful tool in obtaining inequalities. With this aim, we first point out that a series of famous inequalities such as: the (weighted) arithmetic-geometric mean inequality, Acz\'el's,…

微分几何 · 数学 2021-05-10 Nicusor Minculete , Christian Pfeifer , Nicoleta Voicu

In this article, we explore the celebrated Gr\"{u}ss inequality, where we present a new approach using the Gr\"{u}ss inequality to obtain new refinements of operator means inequalities. We also present several operator Gr\"{u}ss-type…

泛函分析 · 数学 2020-09-17 H. R. Moradi , S. Furuichi , Z. Heydarbeygi , M. Sababheh

In this paper, we prove analogues of O'Neil's inequalities for the convolution in the weighted Lebesgue spaces. We also establish the weighted two-sided norm inequalities for the potential operator.

经典分析与常微分方程 · 数学 2013-07-02 Erlan Nursultanov , Sergey Tikhonov

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.

In this paper, we obtain a new class of functions, which is developed via the Hermite--Hadamard inequality for convex functions. The well-known one-one correspondence between the class of operator monotone functions and operator connections…

泛函分析 · 数学 2021-07-23 R. Pal , M. Singh , M. S. Moslehian , J. S. Aujla

In this paper, we introduce the concept of operator arithmetic-geometrically convex functions for positive linear operators and prove some Hermite-Hadamard type inequalities for these functions. As applications, we obtain trace inequalities…

泛函分析 · 数学 2016-03-16 Ali Taghavi , Vahid Darvish , Haji Mohammad Nazari

In this article we present some new comparisons between the Heinz and Heron operator means, which improve some recent results known from the literature. We derive some refinements of these inequalities for unitarily invariant norms with the…

泛函分析 · 数学 2021-05-11 A. G. Ghazanfari

By means of a fixed point method we discuss the deformation of operator means and multivariate means of positive definite matrices/operators. It is shown that the deformation of an operator mean becomes again an operator mean. The means…

泛函分析 · 数学 2017-11-29 Fumio Hiai

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 establish a set of relations between several quite diverse types of weighted inequalities involving various integral operators and fairly general quasinorm-like functionals which we call sub-monotone. The main result enables one to solve…

经典分析与常微分方程 · 数学 2025-03-13 Amiran Gogatishvili , Luboš Pick

This paper aims to characterize the function appearing in the weighted Hermite-Hadamard inequality. We provide improved inequalities for the weighted means as applications of the obtained results. Modifications of the weighted…

综合数学 · 数学 2023-01-02 Shigeru Furuichi , Nicuşor Minculete , Hamid Reza Moradi