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A stability version of the Blaschke-Santal\'o inequality and the affine isoperimetric inequality for convex bodies of dimension n>2 is proved. The first step is the reduction to the case when the convex body is o-symmetric and has axial…

Metric Geometry · Mathematics 2009-01-22 Károly J. Böröczky

It is shown that each monotone Minkowski endomorphism of convex bodies gives rise to an isoperimetric inequality which directly implies the classical Urysohn inequality. Among this large family of new inequalities, the only affine invariant…

Metric Geometry · Mathematics 2021-06-14 Georg C. Hofstätter , Franz E. Schuster

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

In this work we establish functional asymmetric versions of the celebrated Blaschke-Santal\'o inequality. As consequences of these inequalities we recover their geometric counterparts with equality cases, as well as, another inequality with…

Metric Geometry · Mathematics 2025-03-14 Julian Haddad , C. Hugo Jimenez , Marcos Montenegro

We explore analogs of classical centro-affine invariant isoperimetric inequalities, such as the Blaschke--Santal\'o inequality and the $L_p$-affine isoperimetric inequalities, for convex bodies in spherical space. Specifically, we establish…

Metric Geometry · Mathematics 2024-11-05 Florian Besau , Elisabeth M. Werner

A purely analytic proof is given for an inequality that has as a direct consequence the two most important affine isoperimetric inequalities of plane convex geometry: The Blaschke-Santalo inequality and the affine isoperimetric inequality…

Metric Geometry · Mathematics 2007-05-23 Wenxiong Chen , Ralph Howard , Erwin Lutwak , Deane Yang , Gaoyong Zhang

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 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…

Functional Analysis · Mathematics 2007-05-23 Matthieu Fradelizi , Mathieu Meyer

We prove the Blaschke-Santal\'o inequality restricted to $n$-gons: the extremal polygons are the affine regular $n$-gons. If either the John or the L\"owner ellipse of a planar $o$-symmetric convex body $K$ is the unit circle about $o$,…

Metric Geometry · Mathematics 2014-11-18 K. J. Böröczky , E. Makai

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:…

Analysis of PDEs · Mathematics 2026-01-23 Yuxuan Zhou , Wenming Zou

This paper is dedicated to study the sine version of polar bodies and establish the $L_p$-sine Blaschke-Santal\'{o} inequality for the $L_p$-sine centroid body. The $L_p$-sine centroid body $\Lambda_p K$ for a star body…

Metric Geometry · Mathematics 2022-06-02 Qingzhong Huang , Ai-Jun Li , Dongmeng Xi , Deping Ye

In this paper, we present sharp stability results for various reverse isoperimetric problems in $\mathbb R^2$. Specifically, we prove the stability of the reverse isoperimetric inequality for $\lambda$-convex bodies -- convex bodies with…

Differential Geometry · Mathematics 2026-01-07 Kostiantyn Drach , Kateryna Tatarko

Stability versions of the functional forms of the Blaschke-Santalo inequality due to Ball, Artstein-Klartag-Milman, Fradelizi-Meyer and Lehec are proved.

Metric Geometry · Mathematics 2012-06-05 Franck Barthe , Karoly J. Boroczky , Matthieu Fradelizi

We study stability issues for the so-called Borell-Brascamp-Lieb inequalities, proving that when near equality is realized, the involved functions must be $L^1$-close to be $p$-concave and to coincide up to homotheties of their graphs.

Functional Analysis · Mathematics 2017-02-01 Andrea Rossi , Paolo Salani

In contemporary convex geometry, the rapidly developing L_p-Brunn Minkowski theory is a modern analogue of the classical Brunn Minkowski theory. A cornerstone of this theory is the L_p-affine surface area for convex bodies. Here, we…

Functional Analysis · Mathematics 2014-02-14 U. Caglar , M. Fradelizi , O. Guedon , J. Lehec , C. Schuett , E. M. Werner

Obtaining explicit stability estimates in classical functional inequalities like the Sobolev inequality has been an essentially open question for 30 years, after the celebrated but non-constructive result of G. Bianchi and H. Egnell in…

Analysis of PDEs · Mathematics 2025-09-23 Jean Dolbeault

We present proofs of the reverse Santal\'{o} inequality, the existence of M-ellipsoids and the reverse Brunn-Minkowski inequality, using purely convex geometric tools. Our approach is based on properties of the isotropic position.

Metric Geometry · Mathematics 2011-12-15 Apostolos Giannopoulos , Grigoris Paouris , Beatrice-Helen Vritsiou

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 problem of stability for the Pr\'ekopa-Leindler inequality. Exploiting properties of the transport map between radially decreasing functions and a suitable functional version of the trace inequality, we obtain a uniform…

Functional Analysis · Mathematics 2024-10-03 Alessio Figalli , João P. G. Ramos

We establish new geometric inequalities comparing the volumes of sections and projections of a convex body, whose barycenter or Santal\'o point is at the origin, with those of its inner and outer regularizations. We also provide functional…

Metric Geometry · Mathematics 2025-11-06 Natalia Tziotziou
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