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The paper concerns the sharp boundary regularity estimates in homogenization of Dirichlet problem for Stokes systems. We obtain the Lipschitz estimates for velocity term and $L^\infty$ estimate for pressure term, under some reasonable…

Analysis of PDEs · Mathematics 2016-12-20 Shu Gu , Qiang Xu

In this article, we study homogenization of a parabolic linear problem governed by a coefficient matrix with rapid spatial and temporal oscillations in periodically perforated domains with homogeneous Neumann data on the boundary of the…

Analysis of PDEs · Mathematics 2018-01-25 Tatiana Lobkova

We consider positive solutions, possibly unbounded, to the semilinear equation $-\Delta u=f(u)$ on continuous epigraphs bounded from below. Under the homogeneous Dirichlet boundary condition, we prove new monotonicity results for $u$, when…

Analysis of PDEs · Mathematics 2025-02-10 Nicolas Beuvin , Alberto Farina , Berardino Sciunzi

This paper considers a family of second-order parabolic equations in divergence form with rapidly oscillating and time-dependent periodic coefficients and an interface between two periodic structures. Following a framework initiated by…

Analysis of PDEs · Mathematics 2023-06-21 Yiping Zhang

For a family of systems of linear elasticity with rapidly oscillating periodic coefficients, we establish sharp boundary estimates with either Dirichlet or Neumann conditions, uniform down to the microscopic scale, without smoothness…

Analysis of PDEs · Mathematics 2015-07-23 Zhongwei Shen

Convergence of the solutions of nonhomogeneous linear singularly perturbed systems to that of the corresponding reduced singular system on the half-line [0, $\infty $) is considered. To include the situation on a neighborhood of initial…

Optimization and Control · Mathematics 2008-05-27 Zhibin Yan

We consider a nonlinear elliptic equation driven by a nonhomogeneous differential operator plus an indefinite potential. On the reaction term we impose conditions only near zero. Using variational methods, together with truncation and…

Analysis of PDEs · Mathematics 2020-06-03 Nikolaos S. Papageorgiou , Vicenţiu D. Rădulescu , Dušan D. Repovš

This paper concerns with a family of elliptic systems of linear elasticity with rapidly oscillating periodic coefficients, arising in the theory of homogenization. We establish uniform optimal regularity estimates for solutions of Neumann…

Analysis of PDEs · Mathematics 2017-03-08 Jun Geng , Zhongwei Shen , Liang Song

This paper presents an extension of the unfolding operator technique, initially applied to two-dimensional domains, to the realm of three-dimensional thin domains. The advancement of this methodology is pivotal, as it enhances our…

Analysis of PDEs · Mathematics 2024-05-10 José M. Arrieta , Jean Carlos Nakasato , Manuel Villanueva-Pesqueira

A numerical study of the nonlinear Schr\"odinger (NLS) equation subject to homogeneous Dirichlet, Neumann and Robin boundary conditions in the finite line is presented. The results are compared with both the exact analytical ones for the…

Pattern Formation and Solitons · Physics 2013-01-18 Juan I. Ramos , Francisco R. Villatoro

In this article, we study the uniform null controllability problem for a system of coupled parabolic equations with an oscillating coefficient. This is done in three steps -- first, we study the spectral properties of an elliptic operator;…

Analysis of PDEs · Mathematics 2024-04-05 Vaibhav Kumar Jena , Abu Sufian

We study the homogenization process for families of strongly nonlinear elliptic systems with the homogeneous Dirichlet boundary conditions. The growth and the coercivity of the elliptic operator is assumed to be indicated by a general…

Analysis of PDEs · Mathematics 2017-04-13 Miroslav Bulíček , Piotr Gwiazda , Martin Kalousek , Agnieszka Świerczewska-Gwiazda

We consider nonlinear, uniformly elliptic equations with random, highly oscillating coefficients satisfying a finite range of dependence. We prove that homogenization and linearization commute in the sense that the linearized equation…

Analysis of PDEs · Mathematics 2019-09-26 Scott Armstrong , Sam Ferguson , Tuomo Kuusi

We consider the Cauchy problem for non-autonomous forms inducing elliptic operators in divergence form with Dirichlet, Neumann, or mixed boundary conditions on an open subset $\Omega$ $\subseteq$ R n. We obtain maximal regularity in L 2…

Functional Analysis · Mathematics 2019-12-06 Pascal Auscher , Moritz Egert

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…

Analysis of PDEs · Mathematics 2024-06-28 Xiaoli Yu , Xingyong Zhang

We study second order parabolic equations on Lipschitz domains subject to inhomogeneous Neumann (or, more generally, Robin) boundary conditions. We prove existence and uniqueness of weak solutions and their continuity up to the boundary of…

Analysis of PDEs · Mathematics 2011-09-01 Robin Nittka

We consider Dirichlet problems for fully nonlinear mixed local-nonlocal non-translation invariant operators. For a bounded $C^2$ domain $\Omega \subset \mathbb{R}^d,$ let $u\in C(\mathbb{R}^d)$ be a viscosity solution of such Dirichlet…

Analysis of PDEs · Mathematics 2025-09-09 Mitesh Modasiya , Abhrojyoti Sen

In this paper we study the asymptotic behavior of the solutions of a class of nonlinear elliptic problems posed in a 2-dimensional domain that degenerates into a line segment (a thin domain) when a positive parameter $\varepsilon$ goes to…

Analysis of PDEs · Mathematics 2020-05-06 Jean Carlos Nakasato , Marcone Corrêa Pereira

In this paper we provide a comparison result between the solutions to the torsion problem for the Hermite operator with Robin boundary conditions and the one of a suitable symmetrized problem.

Analysis of PDEs · Mathematics 2021-10-22 Francesco Chiacchio , Nunzia Gavitone , Carlo Nitsch , Cristina Trombetti

In this paper, we are interested in the reiterated homogenization of linear elliptic equations of the form $-\frac{\partial}{\partial x_{i}} \left(a_{i j} \left(\frac{x}{\varepsilon}, \frac{x}{\varepsilon^{2}}\right) \frac{\partial…

Analysis of PDEs · Mathematics 2019-10-01 Yiping Zhang