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In this paper, we got some refinements of the norm inequalities related to the Heinz mean and logarithmic mean.

经典分析与常微分方程 · 数学 2022-06-14 Guanghua Shi

We consider a general class of sharp $L^p$ Hardy inequalities in $\R^N$ involving distance from a surface of general codimension $1\leq k\leq N$. We show that we can succesively improve them by adding to the right hand side a lower order…

偏微分方程分析 · 数学 2007-05-23 G. Barbatis , S. Filippas , A. Tertikas

In this paper, we present a refined version of the (classical) Stein inequality for the Fourier transform, elevating it to a new level of accuracy. Furthermore, we establish extended analogues of a more precise version of the Stein…

泛函分析 · 数学 2024-11-19 Erlan D. Nursultanov , Durvudkhan Suragan

We consider Hardy-Rellich inequalities and discuss their possible improvement. The procedure is based on decomposition into spherical harmonics, where in addition various new inequalities are obtained (e.g. Rellich-Sobolev inequalities). We…

偏微分方程分析 · 数学 2007-05-23 A. Tertikas , N. B. Zographopoulos

We present inequalities and some applications to Kellers' limit and Carlemans' inequality.

经典分析与常微分方程 · 数学 2013-12-24 Cristinel Mortici , Hu Yue

This paper is concerned with the concept of linear repetitivity in the theory of tilings. We prove a general uniform subadditive ergodic theorem for linearly repetitive tilings. This theorem unifies and extends various known (sub)additive…

动力系统 · 数学 2015-02-24 David Damanik , Daniel Lenz

We present a refinement, by selfimprovement, of the arithmetic geometric inequality.

经典分析与常微分方程 · 数学 2009-10-30 J. M. Aldaz

The aim of this note is to show that Poincar\'e inequalities imply corresponding weighted versions in a quite general setting. Fractional Poincar\'e inequalities are considered, too. The proof is short and does not involve covering…

偏微分方程分析 · 数学 2013-02-08 Bartłomiej Dyda , Moritz Kassmann

In this article, we employ certain properties of the transform $C_{M,m}(A)=(MI-A^*)(A-mI)$ to obtain new inequalities for the bounded linear operator $A$ on a complex Hilbert space $\mathcal{H}$. In particular, we obtain new relations among…

泛函分析 · 数学 2023-02-06 Mohammad Sababheh , Ibrahim Halil Gümüş , Hamid Reza Moradi

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

We show that Pinney's equation [2] with a constant coefficient can be reduced to its linear part by a simple change of variables. Also, Pinney's original solution is simplified slightly.

偏微分方程分析 · 数学 2019-02-08 Philip Korman

In this note, we find a new inequality involving primes and deduce several Bonse-type inequalities.

综合数学 · 数学 2009-08-21 Shaohua Zhang

In this paper, we introduce and prove the generalizations of Radon inequality. The proofs in the paper unify and are simpler than those in former work. Meanwhile, we also find mathematical equivalences among the Bernoulli inequality, the…

经典分析与常微分方程 · 数学 2021-07-26 Yongtao Li , Xian-Ming Gu , Jianci Xiao

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

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

In this paper, we give a new generalization of the Bohr inequality in refined form both for bounded analytic functions, and for sense-preserving harmonic functions with analytic part being bounded.

复变函数 · 数学 2021-04-15 Saminathan Ponnusamy , Ramakrishnan Vijayakumar

We extend a result of Levin and Ste\v{c}kin concerning an inequality analogous to Hardy's inequality.

泛函分析 · 数学 2010-08-18 Peng Gao

This paper is essentially derived from the observation that some results used for improving constants in the Lieb-Thirring inequalities for Schrodinger operators in L2(-\infty,\infty) can be translated to the discrete Schrodinger op-…

泛函分析 · 数学 2013-12-09 Arman Sahovic

In this article, we prove an inner product inequality for Hilbert space operators. This inequality, then, is utilized to present a general numerical radius inequality using convex functions. Applications of the new results include obtaining…

泛函分析 · 数学 2022-07-19 Zahra Heydarbeygi , Mohammad Sababheh , Hamid Reza Moradi

In this paper we study some improvements of the classical Hardy inequality. We add to the right hand side of the inequality a term which depends on some Lorentz norms of $u$ or of its gradient and we find the best values of the constants…

偏微分方程分析 · 数学 2010-02-17 Angelo Alvino , Roberta Volpicelli , Bruno Volzone