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This paper is concerned with space-time homogenization problems for damped wave equations with spatially periodic oscillating elliptic coefficients and temporally (arithmetic) quasi-periodic oscillating viscosity coefficients. Main results…

偏微分方程分析 · 数学 2021-07-13 Tomoyuki Oka

We establish quantitative homogenization, large-scale regularity and Liouville results for the random conductance model on a supercritical (Bernoulli bond) percolation cluster. The results are also new in the case that the conductivity is…

概率论 · 数学 2017-02-06 Scott Armstrong , Paul Dario

This paper is concerned with quantitative homogenization of second-order parabolic systems with periodic coefficients varying rapidly in space and time, in different scales. We obtain large-scale interior and boundary Lipschitz estimates as…

偏微分方程分析 · 数学 2020-01-08 Jun Geng , Zhongwei Shen

The article studies the reiterated homogenization of linear elliptic variational inequalities arising in problems with unilateral constrains. We assume that the coefficients of the equations satisfy and abstract hypothesis covering on each…

数学物理 · 物理学 2018-11-16 Hermann Douanla , Cyrille Kenne

We prove quantitative estimates for the stochastic homogenization of linear uniformly elliptic equations in nondivergence form. Under strong independence assumptions on the coefficients, we obtain optimal estimates on the subquadratic…

偏微分方程分析 · 数学 2017-05-24 Scott Armstrong , Jessica Lin

In this paper we study the quantitative homogenization of second-order parabolic systems with locally periodic (in both space and time) coefficients. The $O(\varepsilon)$ scale-invariant error estimate in $L^2(0, T;…

偏微分方程分析 · 数学 2021-12-03 Yao Xu

We establish a quantitative normal approximation result for sums of random variables with multilevel local dependencies. As a corollary, we obtain a quantitative normal approximation result for linear functionals of random fields which may…

概率论 · 数学 2019-05-27 Julian Fischer

We prove quantitative estimates on the rate of convergence for the oscillating Dirichlet problem in periodic homogenization of divergence-form uniformly elliptic systems. The estimates are optimal in dimensions larger than three and new in…

偏微分方程分析 · 数学 2017-08-02 Scott Armstrong , Tuomo Kuusi , Jean-Christophe Mourrat , Christophe Prange

We unify and extend the semigroup and the PDE approaches to stochastic maximal regularity of time-dependent semilinear parabolic problems with noise given by a cylindrical Brownian motion. We treat random coefficients that are only…

偏微分方程分析 · 数学 2019-02-12 Pierre Portal , Mark Veraar

We consider the Cauchy problem for a stochastic scalar parabolic-hyperbolic equation in any space dimension with nonlocal, nonlinear, and possibly degenerate diffusion terms. The equations are nonlocal because they involve fractional…

偏微分方程分析 · 数学 2020-08-10 Neeraj Bhauryal , Ujjwal Koley , Guy Vallet

In this paper, we show that the concept of sigma-convergence associated to stochastic processes can tackle the homogenization of stochastic partial differential equations. In this regard, the homogenization problem for a stochastic…

偏微分方程分析 · 数学 2014-08-12 Paul André Razafimandimby , Jean Louis Woukeng

This paper derives the stochastic homogenization for two dimensional Navier--Stokes equations with random coefficients. By means of weak convergence method and Stratonovich--Khasminskii averaging principle approach, the solution of two…

偏微分方程分析 · 数学 2024-12-18 Dong Su , Hui Liu , Yangyang Shi

We prove quantitative homogenization results for high contrast parabolic equations with random coefficients depending on both space and time. In particular, we prove that under a sufficient decorrelation assumption the homogenization length…

偏微分方程分析 · 数学 2026-04-10 Aidan Lau

We deal with solutions of the Cauchy problem to linear both homogeneous and nonhomogeneous parabolic second order equations with real constant coefficients in the layer ${\mathbb R}^{n+1}_T={\mathbb R}^n\times (0, T)$, where $n\geq 1$ and…

偏微分方程分析 · 数学 2019-09-05 Gershon Kresin , Vladimir Maz'ya

In 2018, Bourgain pioneered a novel perturbative harmonic-analytic approach to the stochastic homogenization theory of discrete elliptic equations with weakly random i.i.d. coefficients. The approach was subsequently refined to show that…

偏微分方程分析 · 数学 2024-06-17 Mitia Duerinckx , Marius Lemm , François Pagano

We present a proof of qualitative stochastic homogenization for a nonconvex Hamilton-Jacobi equation. The new idea is to introduce a family of "sub-equations" and to control solutions of the original equation by the maximal subsolutions of…

偏微分方程分析 · 数学 2013-11-11 Scott N. Armstrong , Hung V. Tran , Yifeng Yu

We give a self-contained introduction to the theory of elliptic homogenization for random coefficient fields, starting from classical qualitative homogenization. The presentation also contains new results, such as optimal estimates (both in…

偏微分方程分析 · 数学 2024-09-19 Scott Armstrong , Tuomo Kuusi

We derive optimal-order homogenization rates for random nonlinear elliptic PDEs with monotone nonlinearity in the uniformly elliptic case. More precisely, for a random monotone operator on $\mathbb{R}^d$ with stationary law (i.e. spatially…

偏微分方程分析 · 数学 2021-01-01 Julian Fischer , Stefan Neukamm

We establish a rate of convergence of the two scale expansion (in the sense of homogenization theory) of the solution to a highly oscillatory elliptic partial differential equation with random coefficients that are a perturbation of…

偏微分方程分析 · 数学 2011-10-25 C. Le Bris , F. Legoll , F. Thomines

We consider the homogenization of parabolic equations with large spatially-dependent potentials modeled as Gaussian random fields. We derive the homogenized equations in the limit of vanishing correlation length of the random potential. We…

数学物理 · 物理学 2008-09-08 Guillaume Bal