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相关论文: A note on Santal\'{o} inequality for the polarity …

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Using a natural representation of a $1/s$-concave function on $\mathbb{R}^d$ as a convex set in $\mathbb{R}^{d+1},$ we derive a simple formula for the integral of its $s$-polar. This leads to convexity properties of the integral of the…

泛函分析 · 数学 2023-10-06 Grigory Ivanov , Elisabeth M. Werner

In this paper we deal with generalizations of the Mahler volume product for log-concave functions. We show that the polarity transform $\mathcal A$ can be rescaled so that the Mahler product it induces has upper and lower bounds of the same…

泛函分析 · 数学 2025-07-31 Shoni Gilboa , Alexander Segal , Boaz A. Slomka

We establish new functional versions of the Blaschke-Santal\'o inequality on the volume product of a convex body which generalize to the non-symmetric setting an inequality of K. Ball and we give a simple proof of the case of equality. As a…

泛函分析 · 数学 2007-05-23 Matthieu Fradelizi , Mathieu Meyer

We prove that the reciprocal of the volume of the polar bodies, about the Santal\'o point, of a {\em shadow system} of convex bodies $K_t$, is a convex function of $t$. Thus extending to the non-symmetric case a result of Campi and Gronchi.…

度量几何 · 数学 2008-07-14 Mathieu Meyer , Shlomo Reisner

We discuss a topological structure on families of convex functions and then apply it to show the existence of extrimizers for the functional Santal\'{o} inequality with respect to polar transform and its reverse.

泛函分析 · 数学 2020-02-10 Ben Li

We will prove a reverse Rogers-Shephard inequality for log-concave functions. In some particular cases, the method used for general log-concave functions can be slightly improved, allowing us to prove volume estimates for polars of…

度量几何 · 数学 2017-05-18 David Alonso-Gutiérrez

This paper deals with an analog of the Mahler volume product related to the ${\cal J}$ transform acting in the class of geometric convex functions ${\rm{Cvx}}_0({\mathbb R}^n)$. We provide asymptotically sharp bounds for the quantity…

泛函分析 · 数学 2019-10-24 Dan I. Florentin , Alexander Segal

We establishe an affine Hardy-Littlewood-Sobolev inequality concerning two different functions which is stronger than the classical Hardy-Littlewood-Sobolev inequality. Furthermore, we also prove reverse inequalities for the new…

泛函分析 · 数学 2025-08-05 Youjiang Lin , Jinghong Zhou , Jiaming Lan

In this paper, we present a simple proof of a recent result of the second author which establishes that functional inverse-Santal{\'o} inequalities follow from Entropy-Transport inequalities. Then, using transport arguments together with…

泛函分析 · 数学 2021-09-10 Matthieu Fradelizi , Nathael Gozlan , Simon Zugmeyer

In this note prove the following Berwald-type inequality, showing that for any integrable log-concave function $f:\mathbb R^n\rightarrow[0,\infty)$ and any concave function $h:L\rightarrow\mathbb [0,\infty)$, where $L$ is the epigraph of…

泛函分析 · 数学 2019-08-06 David Alonso-Gutiérrez , Julio Bernués , Bernardo González Merino

Nakamura and Tsuji recently obtained an integral inequality involving a Laplace transform of even functions that implies, at the limit, the Blaschke-Santal\'o inequality in its functional form. Inspired by their method, based on the…

泛函分析 · 数学 2025-02-06 Dario Cordero-Erausquin , Matthieu Fradelizi , Dylan Langharst

In this paper, we obtain the reversed Hardy-Littlewood-Sobolev inequality with vertical weights on the upper half space and discuss the extremal functions. We show that the sharp constants in this inequality are attained by introducing a…

偏微分方程分析 · 数学 2023-11-08 Jingbo Dou , Yunyun Hu , Jingjing Ma

The classical sharp Hardy-Littlewood-Sobolev inequality states that, for $1<p, t<\infty$ and $0<\lambda=n-\alpha <n$ with $ 1/p +1 /t+ \lambda /n=2$, there is a best constant $N(n,\lambda,p)>0$, such that $$ |\int_{\mathbb{R}^n}…

偏微分方程分析 · 数学 2014-07-11 Jingbo Dou , Meijun Zhu

We prove that the functional volume product for even functions is monotone increasing along the Fokker--Planck heat flow. This in particular yields a new proof of the functional Blaschke--Santal\'{o} inequality by K. Ball and also…

泛函分析 · 数学 2024-03-21 Shohei Nakamura , Hiroshi Tsuji

For a real-valued non-negative and log-concave function we introduce a notion of difference function; the difference function represents a functional analog on the difference body of a convex body. We prove a sharp inequality which bounds…

度量几何 · 数学 2007-05-23 Andrea Colesanti

We prove new entropy inequalities for log concave and s-concave functions that strengthen and generalize recently established reverse log Sobolev and Poincare inequalities for such functions. This leads naturally to the concept of…

泛函分析 · 数学 2013-07-23 Umut Caglar , Elisabeth M. Werner

An inequality of Brascamp and Lieb provides a bound on the covariance of two functions with respect to log-concave measures. The bound estimates the covariance by the product of the $L^2$ norms of the gradients of the functions, where the…

泛函分析 · 数学 2011-10-25 Eric A. Carlen , Dario Cordero-Erausquin , Elliott H. Lieb

We prove two inequalities for the Mittag-Leffler function, namely that the function $\log E_\alpha(x^\alpha)$ is sub-additive for $0<\alpha<1,$ and super-additive for $\alpha>1.$ These assertions follow from two new binomial inequalities,…

经典分析与常微分方程 · 数学 2021-12-16 Stefan Gerhold , Thomas Simon

The Blaschke-Santal\'o inequality states that the volume product $|K| \cdot |K^{o}|$ of a symmetric convex body $K \subset \mathbb{R}^n$ is maximized by the standard Euclidean unit-ball. Cordero-Erausquin asked whether the inequality…

泛函分析 · 数学 2025-10-09 Emanuel Milman , Amir Yehudayoff

It is a classical result that every subharmonic function, defined and ${\mathcal{L}}^p$-integrable for some $p$, $0<p<+\infty$, on the unit disk $\mathbb{D}$ of the complex plane ${\mathbb{C}}$ is for almost all $\theta$ of the form $o((1-|…

偏微分方程分析 · 数学 2009-10-27 Juhani Riihentaus
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