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We study Green functions for the pressure of stationary Stokes systems in a (possibly unbounded) domain $\Omega\subset \mathbb{R}^d$, where $d\ge 2$. We construct the Green function when coefficients are merely measurable in one direction…

Analysis of PDEs · Mathematics 2019-03-12 Jongkeun Choi , Hongjie Dong

We consider evolutionary Stokes system, coupled with the so-called dynamic slip boundary condition, in the simple geometry of a $d$-dimensional half-space. Using the standard technique of the Fourier transform in tangential directions, we…

Analysis of PDEs · Mathematics 2026-03-19 Dalibor Pražák , Michael Zelina

We prove that if $u$ is an $\mathbb{R}^{N}$-valued $W^{1,p}_{loc}$ differential $k$-form with $\delta \left( a(x) \lvert du \rvert^{p-2} du \right) \in L^{(n,1)}_{loc}$ in a domain of $\mathbb{R}^{n}$ for $N \geq 1,$ $n \geq 2,$ $0 \leq k…

Analysis of PDEs · Mathematics 2025-04-02 Swarnendu Sil

This paper is concerned with uniform regularity estimates for a family of Stokes systems with rapidly oscillating periodic coefficients. We establish interior Lipschitz estimates for the velocity and $L^\infty$ estimates for the pressure as…

Analysis of PDEs · Mathematics 2015-08-13 Shu Gu , Zhongwei Shen

We consider $A_1$-weights and prove weighted weak type $(1,1)$ estimates for oscillatory singular integrals with kernels satisfying a Dini condition.

Classical Analysis and ODEs · Mathematics 2026-04-29 Shuichi Sato

We establish partial regularity result for vector-valued solutions to second order elliptic system in divergence form. The coefficients safisfies Dini condition respect to $(x,u)$ with growth order lager than 2. We prove $C^1$-regularity of…

Analysis of PDEs · Mathematics 2013-07-09 Taku Kanazawa

We consider a generalized steady Stokes system with discontinuous coefficients in a nonsmooth domain when the inhomogeneous term belongs to a weighted $L^q$ space for $2<q<\infty$. We prove the global weighted $L^q$-estimates for the…

Analysis of PDEs · Mathematics 2017-04-05 Sun-sig Byun , Hyoungsuk So

In this paper, we study the $L^p$-asymptotic stability of the one-dimensional linear damped wave equation with Dirichlet boundary conditions in $[0,1]$, with $p\in (1,\infty)$. The damping term is assumed to be linear and localized to an…

Analysis of PDEs · Mathematics 2021-04-13 Meryem Kafnemer , Mebkhout Benmiloud , Frédéric Jean , Yacine Chitour

The aim of this paper is to establish regularity for weak solutions to the nondiagonal quasilinear degenerate elliptic systems related to H\"{o}rmander's vector fields, where the coefficients are bounded with vanishing mean oscillation. We…

Analysis of PDEs · Mathematics 2014-04-28 Yan Dong , Pengcheng Niu

We prove the existence and pointwise bounds of the Green functions for stationary Stokes systems with measurable coefficients in two dimensional domains. We also establish pointwise bounds of the derivatives of the Green functions under a…

Analysis of PDEs · Mathematics 2018-11-06 Jongkeun Choi , Doyoon Kim

In this paper, we prove that any $W^{2,1}$ strong solution to second-order non-divergence form elliptic equations is locally $W^{2,\infty}$ and piecewise $C^{2}$ when the leading coefficients and data are of piecewise Dini mean oscillation…

Analysis of PDEs · Mathematics 2019-04-25 Hongjie Dong , Longjuan Xu

Interior pointwise $C^{1,\alpha}$ estimates are established for Stokes systems in divergence form where no continuity in time variable is assumed for the coefficients and the given data. The estimates are attained by iteration and are…

Analysis of PDEs · Mathematics 2023-04-10 Rong Dong , Dongsheng Li

Global weighted $L^{p}$-estimates are obtained for the gradient of solutions to a class of linear singular, degenerate elliptic Dirichlet boundary value problems over a bounded non-smooth domain. The coefficient matrix is symmetric,…

Analysis of PDEs · Mathematics 2016-12-19 Dat Cao , Tadele Mengesha , Tuoc Phan

We study interior regularity of solutions of a generalized stationary Stokes problem in the plane. The main, elliptic part of the problem is given in the form div(A(Du)), where D is the symmetric part of the gradient. The model case is…

Analysis of PDEs · Mathematics 2014-01-29 Lars Diening , Petr Kaplicky , Sebastian Schwarzacher

In this paper we derive local estimates of solutions of the Perturbed Stokes system. This system arises as a reduction of the Stokes system near a curved part of the boundary of the domain if one applies a diffeomorphism flatting the…

Analysis of PDEs · Mathematics 2014-03-03 Viktor Vyalov , Timofey Shilkin

In this paper, we consider linear elliptic systems from composite materials where the coefficients depend on the shape and might have the discontinuity between the subregions. We derive a function which is related to the gradient of the…

Analysis of PDEs · Mathematics 2022-06-17 Youchan Kim , Pilsoo Shin

We study the stationary Stokes and Navier-Stokes equations with non-homogeneous Navier boundary condition in a bounded domain $\Omega\subset\mathbb{R}^{3}$ of class $\mathcal{C}^{1,1}$. We prove existence, uniqueness of weak and strong…

Analysis of PDEs · Mathematics 2018-09-25 Paul Acevedo , Cherif Amrouche , Carlos Conca , Amrita Ghosh

Concerned with the Stokes systems with rapidly oscillating periodic coefficients, we mainly extend the recent works in \cite{SGZWS,G} to those in term of Lipschitz domains. The arguments employed here are quite different from theirs, and…

Analysis of PDEs · Mathematics 2016-09-02 Qiang Xu

We present a new method for the existence and pointwise estimates of a Green's function of non-divergence form elliptic operator with Dini mean oscillation coefficients. We also present a sharp comparison with the corresponding Green's…

Analysis of PDEs · Mathematics 2021-08-24 Seick Kim , Sungjin Lee

We investigate the regularity of elliptic equations in double divergence form, where the leading coefficients satisfying the Dini mean oscillation condition. We prove that the solutions are differentiable on the zero level set and derive a…

Analysis of PDEs · Mathematics 2025-02-03 Jongkeun Choi , Hongjie Dong , Dong-ha Kim , Seick Kim