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Related papers: On the functional Blaschke-Santalo inequality

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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.

Functional Analysis · Mathematics 2020-02-10 Ben Li

We consider the Polya--Szeg\"o type weighted inequality. We prove this inequality for monotone rearrangement and for Steiner's symmetrization.

Optimization and Control · Mathematics 2014-02-14 S. V. Bankevich , A. I. Nazarov

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…

Functional Analysis · Mathematics 2024-03-21 Shohei Nakamura , Hiroshi Tsuji

The Blaschke-Santal\'o Inequality is the assertion that the volume product of a centrally symmetric convex body in Euclidean space is maximized by (and only by) ellipsoids. In this paper we give a Fourier analytic proof of this fact.

Metric Geometry · Mathematics 2018-11-15 Gabriele Bianchi , Michael Kelly

We study the fundamental properties of pointwise semi-Lipschitz functions between asymmetric spaces, which are the natural asymmetric counterpart of pointwise Lipschitz functions. We also study the influence that partial symmetries of a…

Functional Analysis · Mathematics 2024-10-10 Estíbalitz Durand-Cartagena , Jesús Á. Jaramillo , Francisco Venegas M

We study extension theorems for Lipschitz-type operators acting on metric spaces and with values on spaces of integrable functions. Pointwise domination is not a natural feature of such spaces, and so almost everywhere inequalities and…

Functional Analysis · Mathematics 2019-10-02 W. V. Cavalcante , P. Rueda , E. A. Sánchez-Pérez

We discuss the asymmetric sandwich theorem, a generalization of the Hahn-Banach theorem. As applications, we derive various results on the existence of linear functionals that include bivariate, trivariate and quadrivariate generalizations…

Functional Analysis · Mathematics 2015-05-30 Stephen Simons

An inequality of Brascamp-Lieb-Luttinger and of Rogers states that among subsets of Euclidean space $\mathbb{R}^d$ of specified Lebesgue measures, balls centered at the origin are maximizers of certain functionals defined by…

Classical Analysis and ODEs · Mathematics 2018-10-16 Michael Christ , Dominique Maldague

We show that analytic analogs of Brunn-Minkowski-type inequalities fail for functional intrinsic volumes on convex functions. This is demonstrated both through counterexamples and by connecting the problem to results of Colesanti, Hug, and…

Functional Analysis · Mathematics 2026-01-28 Fabian Mussnig , Jacopo Ulivelli

In this work we prove the Stepanov differentiation theorem for multiple-valued functions. This theorem is proved in the wide generality of metric-space-multiple-valued functions without relying on a Lipschitz extension result. General…

Metric Geometry · Mathematics 2025-06-24 Paolo De Donato

We give a combinatorial extension of the classical inequalities of Maclaurin about symmetric functions of several variables. We discuss two problems - one analytical and another combinatorial - and show that they are in some sense…

Combinatorics · Mathematics 2013-05-03 Vladimir Nikiforov

We establish a Fenchel-Moreau type theorem for proper convex functions $f\colon X\to \bar{L}^0$, where $(X, Y, \langle \cdot,\cdot \rangle)$ is a dual pair of Banach spaces and $\bar L^0$ is the space of all extended real-valued functions…

Functional Analysis · Mathematics 2020-10-15 Samuel Drapeau , Asgar Jamneshan , Michael Kupper

The aim of this short note is to give an alternative proof, which applies to functions of bounded variation in arbitrary domains, of an inequality by Maz'ya that improves Friedrichs inequality. A remarkable feature of such a proof is that…

Analysis of PDEs · Mathematics 2017-12-19 Luca Rondi

We prove a Strichartz inequality for a system of orthonormal functions, with an optimal behavior of the constant in the limit of a large number of functions. The estimate generalizes the usual Strichartz inequality, in the same fashion as…

Analysis of PDEs · Mathematics 2014-11-07 Rupert L. Frank , Mathieu Lewin , Elliott H. Lieb , Robert Seiringer

In this paper, we study Bessel operators and Bessel Laplace equations studied by Weinstein, Huber, and related the harmonic function theory introduced by Muckenhoupt--Stein. We establish the Moser type inequality for these harmonic…

Analysis of PDEs · Mathematics 2016-07-15 Xuan Thinh Duong , Zihua Guo , Ji Li , Dongyong Yang

The Blaschke Santal\'o inequality and the $L_p$ affine isoperimetric inequalities are major inequalities in convex geometry and they have a wide range of applications. Functional versions of the Blaschke Santal\'o inequality have been…

Functional Analysis · Mathematics 2016-06-29 Elisabeth M. Werner , Umut Caglar

We give a stability version of of the Blaschke-Santal\'{o} inequality in the plane.

Differential Geometry · Mathematics 2025-06-30 Mohammad N. Ivaki

We define a new family of symmetric functions which are affine analogues of Stanley symmetric functions. We establish basic properties of these functions including symmetry, dominance and conjugation. We conjecture certain positivity…

Combinatorics · Mathematics 2007-05-23 Thomas Lam

We discuss a one-parameter family of transformations which changes sets and functions continuously into their (k,n)-Steiner symmetrizations. Our construction consists of two stages. First, we employ a continuous symmetrization introduced by…

Analysis of PDEs · Mathematics 2011-02-07 Alexander Yu. Solynin

Two consequences of the stability version of the one dimensional Pr\'ekopa-Leindler inequality are presented. One is the stability version of the Blaschke-Santal\'o inequality, and the other is a stability version of the Pr\'ekopa-Leindler…

Metric Geometry · Mathematics 2009-09-22 Károly J. Böröczky , Keith M. Ball