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An improvement of a global Gagliardo-Nienberg inequality with a BMO term is established.

偏微分方程分析 · 数学 2025-12-15 Dung Le

The behavior of bilinear operators acting on interpolation of Banach spaces for the $\rho$ method in relation to the compactness is analyzed. Similar results of Lions-Peetre, Hayakawa and Person's compactness theorems are obtained for the…

泛函分析 · 数学 2012-06-04 Eduardo Brandani da Silva , Dicesar Lass Fernandez

The dual purpose of this article is to establish bilinear Poincare-type estimates associated to an approximation of the identity and to explore the connections between bilinear pseudo-differential operators and bilinear potential-type…

经典分析与常微分方程 · 数学 2012-10-09 Frederic Bernicot , Diego Maldonado , Kabe Moen , Virginia Naibo

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 present a new approach to the Marcinkiewicz interpolation inequality for the distribution function of the Hilbert transform, and prove an "abstract" version of this inequality. The approach uses "logarithmic determinants" and new…

复变函数 · 数学 2007-05-23 V. Matsaev , I. Ostrovskii , M. Sodin

The main goal of this exposition is to present further analysis of the Kantorovich and Ando operator inequalities. In particular, a new proof of Ando's inequality is given, a new non-trivial refinement of Kantorovich inequality is shown,…

We prove logarithmic Sobolev inequalities on higher-dimensional bounded smooth domains based on novel Gagliardo-Nirenberg type interpolation inequalities. Moreover, we use them to address the long-time dynamics of some nonlinear nonlocal…

偏微分方程分析 · 数学 2024-02-29 Elie Abdo , Fizay-Noah Lee

Global and local weighted Gagliardo-Nirenberg inequalities with doubling measures are established. These inequalities are key ingredients for the regularity theory and existence of strong solutions for strongly coupled parabolic and…

泛函分析 · 数学 2016-12-30 Dung Le

In this paper, we establish several improved Caffarelli-Kohn-Nirenberg and Hardy-type inequalities. Our main results are divided into two parts. In the first part, we consider the following Caffarelli-Kohn-Nirenberg inequality:…

偏微分方程分析 · 数学 2026-01-23 Yuxuan Zhou , Wenming Zou

For a general class of divergence type quasi-linear degenerate parabolic equations with measurable coeffcients and lower order terms from non-linear Kato-type classes, we prove local boundedness and continuity of solutions, and the…

偏微分方程分析 · 数学 2009-08-04 Vitali Liskevich , Igor I. Skrypnik

The main aim of this article is to establish a sharp improvement of the classical Bohr inequality for bounded holomorphic mappings in the polydisk $\mathbb{P}\Delta(0;1_n)$. We also prove two other sharp versions of the Bohr inequality in…

复变函数 · 数学 2025-12-09 Molla Basir Ahamed , Sujoy Majumder , Nabadwip Sarkar , Ming-Sheng Liu

We establish the Caffarelli-Kohn-Nirenberg type inequalities involving{ super-logarithms (infinitely iterated logarithms).} As a result the critical Caffarelli-Kohn-Nirenberg type inequalities will be improved, and in certain cases the best…

偏微分方程分析 · 数学 2023-12-13 Hiroshi Ando , Toshio Horiuchi , Eiichi Nakai

The classical Gagliardo-Nirenberg inequality was established in $\mathbb{R}^n$. An extension to a bounded domain was given by Gagliardo in 1959. In this note, we present a simple proof of this result and prove a new Gagliardo-Nirenberg…

偏微分方程分析 · 数学 2021-10-26 Congming Li , Kai Zhang

In a bounded smooth domain of Rn, we shall establish Kato's inequalities involving measures for p-Laplace operator up to the boundary under suitable assumptions. Keywords: Kato's inequality, $p$-Laplace operator

偏微分方程分析 · 数学 2019-09-25 Toshio Horiuchi , Peter Kumlin

By the use of the celebrated Kato's inequality we obtain in this paper some new inequalities for trace class operators on a complex Hilbert space H. Natural applications for functions defined by power series of normal operators are given as…

泛函分析 · 数学 2014-09-29 Silvestru Sever Dragomir

This contribution is devoted to a review of some recent results on existence, symmetry and symmetry breaking of optimal functions for Caffarelli-Kohn-Nirenberg and weighted logarithmic Hardy inequalities. These results have been obtained in…

偏微分方程分析 · 数学 2017-08-23 Jean Dolbeault , Maria J. Esteban

We study the bilinear Hilbert transform and bilinear maximal functions associated to polynomial curves and obtain uniform $L^r$ estimates for $r>\frac{d-1}{d}$ and this index is sharp up to the end point.

经典分析与常微分方程 · 数学 2013-08-19 Xiaochun Li , Lechao Xiao

We show some non-standard Poincar\'e type estimates in the biparametric setting with appropriate weights. We will derive these results using variants from classical estimates exploiting the interplay between maximal functions and fractional…

经典分析与常微分方程 · 数学 2021-09-24 María Eugenia Cejas , Carolina Mosquera , Carlos Pérez , Ezequiel Rela

This work brings together the moment matching approach based on Loewner functions and the classical Loewner framework based on the Loewner pencil in the case of bilinear systems. New Loewner functions are defined based on the bilinear…

经典分析与常微分方程 · 数学 2024-12-13 Pauline Kergus , Ion Victor Gosea , Mihaly Petreczky

We improve an $L^2\times L^2\to L^2$ estimate for a certain bilinear operator in the finite field of size $p$, where $p$ is a prime sufficiently large. Our method carefully picks the variables to apply the Cauchy-Schwarz inequality. As a…

经典分析与常微分方程 · 数学 2024-01-17 Necef Kavrut , Shukun Wu