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A sharp quantitative version of the $L_p-$mixed volume inequality is established. This is achieved by exploiting an improved Jensen inequality. This inequality is a generalization of Pinsker-Csisz\'ar-Kullback inequality for the Tsallis…

Functional Analysis · Mathematics 2015-06-16 Van Hoang Nguyen

One of the fundamental results in Convex Geometry is Busemann's theorem, which states that the intersection body of a symmetric convex body is convex. Thus, it is only natural to ask if there is a quantitative version of Busemann's theorem,…

Metric Geometry · Mathematics 2019-08-15 M. Angeles Alfonseca , Jaegil Kim

We study the Stokes problem over convex polyhedral domains on weighted Sobolev spaces. The weight is assumed to belong to the Muckenhoupt class $A_q$ for $q \in (1,\infty)$. We show that the Stokes problem is well-posed for all $q$. In…

Numerical Analysis · Mathematics 2021-06-02 Enrique Otarola , Abner Salgado

We consider the inhomogeneous incompressible Navier-Stokes system in a smooth two or three dimensional bounded domain, in the case where the initial density is only bounded. Existence and uniqueness for such initial data was shown recently…

Analysis of PDEs · Mathematics 2021-12-14 Raphaël Danchin , Piotr B. Mucha , Tomasz Piasecki

We develop a high-order energy method to prove asymptotic stability of flat steady surfaces for the Stefan problem with surface tension - also known as the Stefan problem with Gibbs-Thomson correction.

Analysis of PDEs · Mathematics 2008-01-08 Mahir Hadzic , Yan Guo

We study the stable norm on the first homology of a closed, non-orientable surface equipped with a Riemannian metric. We prove that in every conformal class there exists a metric whose stable norm is polyhedral. Furthermore the stable norm…

Differential Geometry · Mathematics 2014-10-03 Florent Balacheff , Daniel Massart

We provide a sharp double-sided estimate for Poincar\'e-Sobolev constants on a convex set, in terms of its inradius and $N-$dimensional measure. Our results extend and unify previous works by Hersch and Protter (for the first eigenvalue)…

Spectral Theory · Mathematics 2020-01-01 Lorenzo Brasco , Dario Mazzoleni

This paper is concerned with the study of the wave equation on compact surfaces and locally distributed damping. We study the case where the damping is effective in a well-chosen subset of arbitrarily small measure.

Analysis of PDEs · Mathematics 2008-11-10 M. M. Cavalcanti , V. N. Domingos Cavalcanti , R. Fukuoka , J. A. Soriano

We prove large-data local stability theorems for several spin models in two dimensions.

Analysis of PDEs · Mathematics 2009-06-09 I. Bejenaru , A. D. Ionescu , C. E. Kenig

This article concerns the stability of a model for mass-spring systems with positive damping and negative stiness. It is well known that when the coefficients are frozen in time the system is unstable. Here we find conditions on the…

Classical Analysis and ODEs · Mathematics 2007-06-01 Julio G. Dix , Cesar A. Terrero-Escalante

This paper contains a number of results related to volumes of projective perturbations of convex bodies and the Laplace transform on convex cones. First, it is shown that a sharp version of Bourgain's slicing conjecture implies the Mahler…

Metric Geometry · Mathematics 2018-03-02 Bo'az Klartag

In this paper, we are concerned with the compressible Euler-Maxwell equations with a nonconstant background density (e.g. of ions) in three dimensional space. There exist stationary solutions when the background density is a small…

Analysis of PDEs · Mathematics 2014-03-27 Qingqing Liu , Changjiang Zhu

We consider the motion described by the Navier-Stokes equations in a box with periodic boundary conditions. First we prove the existence of global strong two-dimensional solutions. Next we show the existence of global strong…

Analysis of PDEs · Mathematics 2014-06-04 Wojciech Zajączkowski , Ewa Zadrzyńska

In this paper, we study the L2 stability of high-order finite-volume schemes for the 1D transport equation on non-uniform meshes. We consider the case when a small periodic perturbation is applied to a uniform mesh. For this case, we…

Numerical Analysis · Mathematics 2024-08-30 Pavel Bakhvalov , Mikhail Surnachev

We study the nonhomogeneous boundary value problem for Navier-Stokes equations of steady motion of a viscous incompressible fluid in a three-dimensional bounded multiply connected domain. We prove that this problem has a solution in some…

Mathematical Physics · Physics 2012-04-12 Mikhail Korobkov , Konstantin Pileckas , Remigio Russo

We introduce a strong notion of quasiconvexity in finitely generated groups, which we call stability. Stability agrees with quasiconvexity in hyperbolic groups and is preserved under quasi-isometry for finitely generated groups. We show…

Geometric Topology · Mathematics 2015-11-25 Matthew Gentry Durham , Samuel J. Taylor

We present in this paper a pressure correction scheme for barotropic compressible Navier-Stokes equations, which enjoys an unconditional stability property, in the sense that the energy and maximum-principle-based a priori estimates of the…

Numerical Analysis · Mathematics 2010-11-01 Thierry Gallouët , Laura Gastaldo , Jean-Claude Latché , Raphaele Herbin

We prove a quantitative Sobolev inequality in cones of Bianchi-Egnell type, which implies a stability property. Our result holds for any cone as long as the minimizers of the Sobolev quotient are nondegenerate, which is the case of most…

Analysis of PDEs · Mathematics 2025-02-18 Filomena Pacella , Giulio Ciraolo , Camilla Chiara Polvara

We prove a quantitative stability result for the Brunn-Minkowski inequality: if $|A|=|B|=1$, $t \in [\tau,1-\tau]$ with $\tau>0$, and $|tA+(1-t)B|^{1/n}\leq 1+\delta$ for some small $\delta$, then, up to a translation, both $A$ and $B$ are…

Metric Geometry · Mathematics 2015-02-24 Alessio Figalli , David Jerison

We resolve a question of Carrapatoso et al. on Gaussian optimality for the sharp constant in Poincar\'e-Korn inequalities, under a moment constraint. We also prove stability, showing that measures with near-optimal constant are…

Analysis of PDEs · Mathematics 2024-05-03 Thomas A. Courtade , Max Fathi
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