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In this paper, we mainly establish the existence of at least three non-trivial solutions for a class of nonhomogeneous quasilinear elliptic systems with Dirichlet boundary value or Neumann boundary value in a bounded domain…

偏微分方程分析 · 数学 2024-06-28 Xiaoli Yu , Xingyong Zhang

$C^\alpha$ and $W^{1,\infty}$ estimates for the first-order and second-order correctors in the homogenization are presented based on the translation invariant and Li-Vogelius's gradient estimate for the second order linear elliptic equation…

偏微分方程分析 · 数学 2011-09-07 QiaoFu Zhang , JunZhi Cui

This paper rediscovers a classical homogenization result for a prototypical linear elliptic boundary value problem with periodically oscillating diffusion coefficient. Unlike classical analytical approaches such as asymptotic analysis,…

数值分析 · 数学 2018-11-16 Daniel Peterseim , Dora Varga , Barbara Verfürth

We consider the triharmonic operator subject to homogeneous boundary conditions of intermediate type on a bounded domain of the N-dimensional Euclidean space. We study its spectral behaviour when the boundary of the domain undergoes a…

偏微分方程分析 · 数学 2016-06-13 José Arrieta , Francesco Ferraresso , Pier Domenico Lamberti

We consider divergence form elliptic operators in dimension $n\geq 2$ with $L^\infty$ coefficients. Although solutions of these operators are only H\"{o}lder continuous, we show that they are differentiable ($C^{1,\alpha}$) with respect to…

数值分析 · 数学 2009-09-29 Houman Owhadi , Lei Zhang

This paper is devoted to establish continuous dependence estimates for the ergodic problem for Bellman operators (namely, estimates of (v_1-v_2) where v_1 and v_2 solve two equations with different coefficients). We shall obtain an estimate…

偏微分方程分析 · 数学 2013-06-18 Claudio Marchi

We study periodic homogenization problems for second-order pde in half-space type domains with Neumann boundary conditions. In particular, we are interested in "singular problems" for which it is necessary to determine both the homogenized…

偏微分方程分析 · 数学 2009-10-27 Guy Barles , Francesca Da Lio , Pierre-Louis Lions , Panagiotis E. Souganidis

We introduce Monte Carlo methods to compute the solution of elliptic equations with pure Neumann boundary conditions. We first prove that the solution obtained by the stochastic representation has a zero mean value with respect to the…

概率论 · 数学 2013-08-28 Sylvain Maire , Etienne Tanré

We study the homogenization problem for matrix strongly elliptic operators on $L_2(\mathbb R^d)^n$ of the form $\mathcal A^\varepsilon=-\operatorname{div}A(x,x/\varepsilon)\nabla$. The function $A$ is Lipschitz in the first variable and…

偏微分方程分析 · 数学 2017-05-08 Nikita N. Senik

We prove the unique solvability in weighted Sobolev spaces of non-divergence form elliptic and parabolic equations on a half space with the homogeneous Neumann boundary condition. All the leading coefficients are assumed to be only…

偏微分方程分析 · 数学 2015-02-20 Hongjie Dong , Doyoon Kim , Hong Zhang

We are given a uniformly elliptic coefficient field that we regard as a realization of a stationary and finite-range (say, range unity) ensemble of coefficient fields. Given a (deterministic) right-hand-side supported in a ball of size…

数值分析 · 数学 2018-03-28 Jianfeng Lu , Felix Otto

It is shown by means of reiterated two-scale convergence in the Sobolev-Orlicz setting, that the sequence of solutions of a class of highly oscillatory problems involving nonlinear elliptic operators with nonstandard growth, converges to a…

偏微分方程分析 · 数学 2023-02-20 Joel Fotso Tachago , Hubert Nnang , Elvira Zappale

For a family of second-order elliptic systems in divergence form with rapidly oscillating almost-periodic coefficients, we obtain estimates for approximate correctors in terms of a function that quantifies the almost periodicity of the…

偏微分方程分析 · 数学 2015-06-26 Zhongwei Shen

In this paper, for a family of second-order parabolic system or equation with rapidly oscillating and time-dependent periodic coefficients over rough boundaries, we obtain the large-scale boundary estimates, by a quantitative approach. The…

偏微分方程分析 · 数学 2024-11-14 Pengxiu Yu , Yiping Zhang

This paper is about the homogenization of linear elliptic operators in divergence form with stationary random coefficients that have only slowly decaying correlations. It deduces optimal estimates of the homogenization error from optimal…

偏微分方程分析 · 数学 2022-02-09 Antoine Gloria , Stefan Neukamm , Felix Otto

We investigate boundary estimates for elliptic operators with stationary random coefficients exhibiting integrable correlations, arising from stochastic homogenization theory. As practical applications, we establish decay estimates for…

偏微分方程分析 · 数学 2026-02-12 Li Wang , Qiang Xu

We approximate the homogenization of fully nonlinear, convex, uniformly elliptic Partial Differential Equations in the periodic setting, using a variational formula for the optimal invariant measure, which may be derived via…

偏微分方程分析 · 数学 2017-10-31 Chris Finlay , Adam M. Oberman

In this paper we establish commmutator estimates for the Dirichlet-to-Neumann Map associated to a divergence form elliptic operator in the upper half-space $\mathbb{R}^{n+1}_+:=\{(x,t)\in \mathbb{R}^n \times (0,\infty)\}$, with uniformly…

偏微分方程分析 · 数学 2021-03-16 Steve Hofmann , Guoming Zhang

We derive in this note a high-order corrector estimate for the homogenization of a microscopic semi-linear elliptic system posed in perforated domains. The major challenges are the presence of nonlinear volume and surface reaction rates.…

偏微分方程分析 · 数学 2017-05-24 Vo Anh Khoa

We study second-order hyperbolic equations with degenerate elliptic operators and non-homogeneous Dirichlet boundary inputs. We establish existence and regularity of weak solutions in weighted Sobolev spaces under mild assumptions on the…

偏微分方程分析 · 数学 2026-02-10 Donghui Yang , Jie Zhong