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We consider the homogenization limit of the compressible barotropic Navier-Stokes equations in a three-dimensional domain perforated by periodically distributed identical particles. We study the regime of particle sizes and distances such…

Analysis of PDEs · Mathematics 2021-04-29 Richard M. Höfer , Karina Kowalczyk , Sebastian Schwarzacher

The paper concerns with the global well-posedness issue of the 2D incompressible inhomogeneous Navier-Stokes (INS) equations with fractional dissipation and rough density. We first establish the $L^q_t(L^p)$-maximal regularity estimate for…

Analysis of PDEs · Mathematics 2021-11-25 Yatao Li , Qianyun Miao , Liutang Xue

In this paper we produce new, optimal, regularity results for the solutions to $p$-Poisson equations. We argue through a delicate approximation method, under a smallness regime for the exponent $p$, that imports information from a limiting…

Analysis of PDEs · Mathematics 2020-05-25 Edgard A. Pimentel , Giane C. Rampasso , Makson S. Santos

Using a new local smoothing estimate of the first and third authors, we prove local-in-time Strichartz and smoothing estimates without a loss exterior to a large class of polygonal obstacles with arbitrary boundary conditions and…

Analysis of PDEs · Mathematics 2013-04-22 Dean Baskin , Jeremy L. Marzuola , Jared Wunsch

We analyze the properties of weakly compact sets in Lipschitz free spaces. Prior research has established that, for a complete metric space $M$, weakly precompact sets in the Lipschitz free space $\mathcal F(M)$ are tight. In this paper, we…

Functional Analysis · Mathematics 2026-02-16 Ramón J. Aliaga , Colin Petitjean , Antonín Prochazka , Triinu Veeorg

We consider the homogenization of the Stokes equations in a domain perforated with a large number of small holes which are periodically distributed. In [1,2], Allaire gave a systematic study on this problem. In this paper, we introduce a…

Analysis of PDEs · Mathematics 2019-11-13 Yong Lu

We consider the Cauchy problem for strictly hyperbolic $m$-th order partial differential equations with coefficients low-regular in time and smooth in space. It is well-known that the problem is $L^2$ well-posed in the case of Lipschitz…

Analysis of PDEs · Mathematics 2016-12-01 Massimo Cicognani , Daniel Lorenz

We study the stationary Stokes system with Dini mean oscillation coefficients in a domain having $C^{1,\rm{Dini}}$ boundary. We prove that if $(u, p)$ is a weak solution of the system with zero Dirichlet boundary condition, then $(Du,p)$ is…

Analysis of PDEs · Mathematics 2018-05-08 Jongkeun Choi , Hongjie Dong

We study homogenization properties of the discrete Laplace operator with random conductances on a large domain in $\mathbb{Z}^d$. More precisely, we prove almost-sure homogenization of the discrete Poisson equation and of the top of the…

Probability · Mathematics 2018-06-05 Franziska Flegel , Martin Heida , Martin Slowik

The paper is aimed at analysing a singular perturbation of the Navier-Stokes equations on a compact closed manifold. The case of compact smooth manifolds with boundary under the Dirichlet conditions is also included. Global existence and…

Analysis of PDEs · Mathematics 2019-06-25 Alexander Shlapunov , Nikolai Tarkhanov

We give a simplified proof of regularizing effects for first-order Hamilton-Jacobi Equations of the form $u\_t+H(x,t,Du)=0$ in $\R^N\times(0,+\infty)$ in the case where the idea is to first estimate $u\_t$. As a consequence, we have a…

Analysis of PDEs · Mathematics 2015-10-13 Guy Barles , Emmanuel Chasseigne

We establish a priori regularity estimates for viscosity solutions of degenerate fully nonlinear elliptic equations with integrable right-hand sides. When the nonhomogeneous term belongs to $L^p$ with $p>n$, we prove optimal interior…

Analysis of PDEs · Mathematics 2026-05-21 Hongsoo Kim , Se-Chan Lee

We present quantitative results for the homogenization of uniformly convex integral functionals with random coefficients under independence assumptions. The main result is an error estimate for the Dirichlet problem which is algebraic (but…

Analysis of PDEs · Mathematics 2015-01-28 Scott N. Armstrong , Charles K. Smart

We prove regularity and stochastic homogenization results for certain degenerate elliptic equations in nondivergence form. The equation is required to be strictly elliptic, but the ellipticity may oscillate on the microscopic scale and is…

Analysis of PDEs · Mathematics 2014-10-29 Scott N. Armstrong , Charles K. Smart

We develop a unified method to obtain the quantitative homogenization of Stokes systems in periodically perforated domains with no-slip boundary conditions on the perforating holes. The main novelty of our paper is a quantitative analysis…

Analysis of PDEs · Mathematics 2024-11-27 Wenjia Jing , Yong Lu , Christophe Prange

We establish the regularity theory for certain critical elliptic systems with an anti-symmetric structure under inhomogeneous Neumann and Dirichlet boundary constraints. As applications, we prove full regularity and smooth estimates at the…

Differential Geometry · Mathematics 2015-11-20 Ben Sharp , Miaomiao Zhu

In this paper, we show that, for a solution to the stationary Fokker-Planck equation with general coefficients, defined as a measure with an $L^2$-density, this density not only exhibits $H^{1,2}$-regularity but also H\"{o}lder continuity.…

Analysis of PDEs · Mathematics 2025-04-16 Haesung Lee

We obtain boundary nondegeneracy and regularity estimates for solutions to non-divergence equations in $C^1$ domains, providing an explicit modulus of continuity. Our results extend the classical Hopf-Oleinik lemma and boundary Lipschitz…

Analysis of PDEs · Mathematics 2025-12-29 Clara Torres-Latorre

The main goal of the paper is to show new stability and localization results for the finite element solution of the Stokes system in $W^{1,\infty}$ and $L^{\infty}$ norms under standard assumptions on the finite element spaces on…

Numerical Analysis · Mathematics 2019-07-17 Niklas Behringer , Dmitriy Leykekhman , Boris Vexler

The steady motion of a viscous incompressible fluid in a multiply-connected, planar, bounded domain (perforated with a large number of small holes) is modeled through the Navier-Stokes equations with non-homogeneous Dirichlet boundary data…

Analysis of PDEs · Mathematics 2025-02-25 Clara Patriarca , Gianmarco Sperone