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We present a short proof of the Alexandrov-Fenchel inequalities for mixed volumes of convex bodies.

Metric Geometry · Mathematics 2019-06-25 D. Cordero-Erausquin , B. Klartag , Q. Merigot , F. Santambrogio

Employing a centro-affine flow on smooth convex bodies, we generate new centro-affine differential invariants. One class of the newly defined invariants is the object of a sharp isoperimetric inequality, while other new inequalities on…

Differential Geometry · Mathematics 2010-11-24 Alina Stancu

For a convex body $K$ in $\mathbb{R}^n$, we introduce and study the extremal general affine surface areas, defined by \[ {\rm IS}_{\varphi}(K):=\sup_{K^\prime\subset K}{\rm as}_{\varphi}(K),\quad {\rm os}_{\psi}(K):=\inf_{K^\prime\supset…

Functional Analysis · Mathematics 2021-07-28 Steven Hoehner

In this paper, the results of Mei, Wang, Weng and Xia [Math. Z., 2025, MR4911815] on capillary convex bodies are extended to the anisotropic setting. We develop a theory for anisotropic capillary convex bodies in the half-space and…

Differential Geometry · Mathematics 2025-07-08 Jinyu Gao , Guanghan Li

In this article, we propose the notion of the general $p$-affine capacity and prove some basic properties for the general $p$-affine capacity, such as affine invariance and monotonicity. The newly proposed general $p$-affine capacity is…

Functional Analysis · Mathematics 2017-05-23 Han Hong , Deping Ye

In this paper, the concept of the classical $f$-divergence for a pair of measures is extended to the mixed $f$-divergence for multiple pairs of measures. The mixed $f$-divergence provides a way to measure the difference between multiple…

Probability · Mathematics 2016-06-29 Elisabeth M. Werner , Deping Ye

In this paper we further develop the theory of f-divergences for log-concave functions and their related inequalities. We establish Pinsker inequalities and new affine invariant entropy inequalities. We obtain new inequalities on functional…

Differential Geometry · Mathematics 2020-05-15 Umut Caglar , Alexander V. Kolesnikov , Elisabeth M. Werner

We introduce extremal affine surface areas in a functional setting. We show their main properties. Among them are linear invariance, isoperimetric inequalities and monotonicity properties. We establish a new duality formula, which shows…

Metric Geometry · Mathematics 2024-02-27 Stephanie Egler , Elisabeth M. Werner

In this paper we first introduce quermassintegrals for free boundary hypersurfaces in the $(n+1)$-dimensional Euclidean unit ball. Then we solve some related isoperimetric type problems for convex free boundary hypersurfaces, which lead to…

Differential Geometry · Mathematics 2022-03-01 Julian Scheuer , Guofang Wang , Chao Xia

We classify smooth surfaces whose higher cohomologies of i-forms for all i vanish. We show that if such a surface is not affine, then it has essentially two possibilities.

alg-geom · Mathematics 2008-02-03 N. Mohan Kumar

We find a monotone quantity along the inverse mean curvature flow and use it to prove an Alexandrov-Fenchel-type inequality for strictly convex hypersurfaces in the $n$-dimensional sphere, $n \geq 3$.

Differential Geometry · Mathematics 2016-09-20 Frederico Girão , Neilha M. Pinheiro

Sharp Lp affine isoperimetric inequalities are established for the entire class of Lp projection bodies and the entire class of Lp centroid bodies. These new inequalities strengthen the Lp Petty projection and the Lp Busemann--Petty…

Differential Geometry · Mathematics 2008-09-12 Christoph Haberl , Franz E. Schuster

In this article, we first introduce the quermassintegrals for compact hypersurfaces with capillary boundaries in hyperbolic space from a variational viewpoint, and then we solve an isoperimetric type problem in hyperbolic space. By…

Differential Geometry · Mathematics 2024-06-18 Xinqun Mei , Liangjun Weng

We obtain a generalized version of an inequality, first derived by C. Bandle in the analytic setting, for weak subsolutions of a singular Liouville-type equation. As an application we obtain a new proof of the Alexandrov isoperimetric…

Analysis of PDEs · Mathematics 2017-08-02 Daniele Bartolucci , Daniele Castorina

We give a geometric proof of the fact that any affine surface with trivial Makar-Limanov invariant has finitely many singular points. We deduce that a complete intersection surface with trivial Makar-Limanov invariant is normal.

Commutative Algebra · Mathematics 2010-03-09 Ratnadha Kolhatkar

We prove a Diophantine approximation inequality for closed subschemes on surfaces which can be viewed as a joint generalization of recent inequalities of Ru-Vojta and Heier-Levin in this context. As applications, we study various…

Number Theory · Mathematics 2024-06-28 Keping Huang , Aaron Levin , Zheng Xiao

In this paper, the concept of the classical $f$-divergence (for a pair of measures) is extended to the mixed $f$-divergence (for multiple pairs of measures). The mixed $f$-divergence provides a way to measure the difference between multiple…

Information Theory · Computer Science 2013-04-26 Elisabeth M. Werner , Deping Ye

In this paper, the mixed Lp-surface area measures are defined and the mixed Lp Minkowski inequality is obtained consequently. Furthermore, the mixed Lp projection inequality for mixed projection bodies is established.

Metric Geometry · Mathematics 2020-07-30 Zhongwen Tang , Lin Si

At the heart of convex geometry lies the observation that the volume of convex bodies behaves as a polynomial. Many geometric inequalities may be expressed in terms of the coefficients of this polynomial, called mixed volumes. Among the…

Metric Geometry · Mathematics 2023-09-18 Yair Shenfeld , Ramon van Handel

In this paper, we provide an affirmative answer to [16, Conjecture 1.5] on the Alexandrov-Fenchel inequality for quermassintegrals for convex capillary hypersurfaces in the Euclidean half-space. More generally, we establish a theory for…

Metric Geometry · Mathematics 2025-05-27 Xinqun Mei , Guofang Wang , Liangjun Weng , Chao Xia