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We establish three families of Sobolev trace inequalities of orders two and four in the unit ball under higher order moments constraint, and are able to construct \emph{smooth} test functions to show all such inequalities are \emph{almost…

Differential Geometry · Mathematics 2022-01-26 Xuezhang Chen , Wei Wei , Nan Wu

In this article we generalize the classical Sobolev's and Sobolev's trace inequalities on the Grand Lebesgue Spaces instead the classical Lebesgue Spaces. We will distinguish the classical Sobolev's inequality and the so-called trace…

Functional Analysis · Mathematics 2010-02-26 E. Ostrovsky , E. Rogover , L. Sirota

We firstly describe a maximal inequality for dual Sobolev spaces W^{-1,p}. This one corresponds to a "Sobolev version" of usual properties of the Hardy-Littlewood maximal operator in Lebesgue spaces. Even in the euclidean space, this one…

Functional Analysis · Mathematics 2008-12-17 Frederic Bernicot

The Borell-Brascamp-Lieb inequality is a classical extension of the Pr\'ekopa-Leindler inequality, which in turn is a functional counterpart of the Brunn-Minkowski inequality. The stability of these inequalities has received significant…

Functional Analysis · Mathematics 2025-01-09 Alessio Figalli , Peter van Hintum , Marius Tiba

In this paper, we investigate the sharp Hardy-Littlewood-Sobolev inequalities on the Heisenberg group. On one hand, we apply the concentration compactness principle to prove the existence of the maximizers. While the approach here gives a…

Classical Analysis and ODEs · Mathematics 2013-11-06 Xiaolong Han

For general ferromagnetic Ising models whose coupling matrix has bounded spectral radius, we show that the log-Sobolev constant satisfies a simple bound expressed only in terms of the susceptibility of the model. This bound implies very…

Probability · Mathematics 2024-04-25 Roland Bauerschmidt , Benoit Dagallier

We consider the question of showing a log-Sobolev inequality for the Gibbs measure of the focusing Schr\"odinger equation built by Lebowitz-Rose-Speer (1988), formally given by $$ d\rho \propto \exp\big(\frac 1 p\int_{\mathbb T} |u|^p d x -…

Analysis of PDEs · Mathematics 2025-12-04 Guopeng Li , Jiawei Li , Leonardo Tolomeo

In this paper we establish some explicit and sharp estimates of the spectral gap and the log-Sobolev constant for mean field particles system, uniform in the number of particles, when the confinement potential have many local minimums. Our…

Probability · Mathematics 2019-09-17 Arnaud Guillin , Wei Liu , Liming Wu , Chaoen Zhang

A criterion is presented for the Modified Logarithmic Sobolev inequality on metric measure spaces. The criterion based on U-bound inequalities introduced by Hebisch and Zegarlinski allows to show the inequality for measures that go beyond…

Functional Analysis · Mathematics 2019-07-05 Ioannis Papageorgiou

In this note, we prove the Bogomolov's inequality over a reduced, compact, irreducible, K\"ahler complex space that is smooth in codimension 2. The proof is obtained by a reduction to the smooth case, using Hironaka's resolution of…

Algebraic Geometry · Mathematics 2023-01-30 Xiaojun Wu

We give a simpler proof of the sharp Frank-Lieb inequality on the Heisenberg group. The proof bypasses the sophisticated argument for existence of a minimizer and is based on the study of the 2nd variation of subcritical functionals using…

Analysis of PDEs · Mathematics 2022-11-24 Fengbo Hang , Xiaodong Wang

We give a new proof of the almost sharp Moser-Trudinger inequality on compact Riemannian manifolds based on the sharp Moser inequality on Euclidean spaces. In particular we can lower the smoothness requirement of the metric and apply the…

Analysis of PDEs · Mathematics 2021-08-25 Fengbo Hang

In the Euclidean space $\mathbb{R}^d$, the sharp classical Sobolev inequality is equivalent by conformal invariance to a Sobolev inequality on the hyperbolic space $\mathbb{H}^d$. This inequality is sharp in dimension $d\geq 4$, but it is…

Analysis of PDEs · Mathematics 2025-11-26 Baptiste Devyver , Louis Dupaigne , Pierre-Damien Thizy

We generalize in this article the classical Sobolev's and Sobolev's trace inequalities on the Grand Lebesgue Spaces under monomial weight instead the classical Lebesgue or grand Lebesgue Spaces. We will distinguish the classical Sobolev's…

Functional Analysis · Mathematics 2014-08-26 E. Ostrovsky , L. Sirota

In this paper, We establish the weighted Poincar\'{e} inequalities and Log-Sobolev inequalities for Cauchy distributions with optimal weight functions.

Probability · Mathematics 2011-03-23 Zhengliang Zhang , Bin Qian , Wei Liu

We generalize an inequality for mixed Monge-Amp\`ere measures. We also give an example that shows that our assumptions are sharp. The corresponding result in the setting of compact K\"ahler manifold is also discussed.

Complex Variables · Mathematics 2007-05-23 Slawomir Dinew

In this note we introduce and prove local and potential independent transportation, Log-Sobolev and HWI inequalities in one dimensional free probability on compact intervals which are sharp. We recover using this approach a free…

Probability · Mathematics 2012-09-26 Ionel Popescu

The paper establishes a new family of sharp analytic inequalities. Together with the fractional Sobolev inequalities of Almgren and Lieb, they form a complete class of analytic inequalities, referred to as the chord Sobolev inequalities. A…

Metric Geometry · Mathematics 2026-05-12 Fernanda M. Baêta , Xiaxing Cai

We develop in this paper an improvement of the method given by S. Bobkov and M. Ledoux. Using the Pr\'ekopa-Leindler inequality, we prove a modified logarithmic Sobolev inequality adapted for all measures on $\dR^n$, with a strictly convex…

Probability · Mathematics 2007-10-29 Ivan Gentil

We develop a technique to obtain new symmetrization inequalities that provide a unified framework to study Sobolev inequalities, concentration inequalities and sharp integrability of solutions of elliptic equations

Functional Analysis · Mathematics 2017-05-30 Joaquim Martin , Mario Milman