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We consider an infinite planar straight strip perforated by small holes along a curve. In such domain, we consider a general second order elliptic operator subject to classical boundary conditions on the holes. Assuming that the perforation…

Analysis of PDEs · Mathematics 2017-04-21 Denis Borisov , Giuseppe Cardone , Tiziana Durante

We consider a waveguide modeled by the Laplacian in a straight planar strip. The Dirichlet boundary condition is taken on the upper boundary, while on the lower boundary we impose periodically alternating Dirichlet and Neumann condition…

Spectral Theory · Mathematics 2015-05-20 Denis Borisov , Renata Bunoiu , Giuseppe Cardone

We consider Laplacian in a planar strip with Dirichlet boundary condition on the upper boundary and with frequent alternation boundary condition on the lower boundary. The alternation is introduced by the periodic partition of the boundary…

Spectral Theory · Mathematics 2015-05-13 D. Borisov , G. Cardone

We consider a magnetic Schroedinger operator in a planar infinite strip with frequently and non-periodically alternating Dirichlet and Robin boundary conditions. Assuming that the homogenized boundary condition is the Dirichlet or the Robin…

Analysis of PDEs · Mathematics 2014-03-25 Denis Borisov , Renata Bunoiu , Giuseppe Cardone

This paper is concerned with the homogenization of Dirichlet problem of elliptic systems in a bounded, smooth domain of finite type. Both the coefficients of the elliptic operator and the Dirichlet boundary data are assumed to be periodic…

Analysis of PDEs · Mathematics 2017-02-14 Jinping Zhuge

We prove the homogenization of the Dirichlet problem for fully nonlinear elliptic operators with periodic oscillation in the operator and of the boundary condition for a general class of smooth bounded domains. This extends the previous…

Analysis of PDEs · Mathematics 2013-05-07 William M. Feldman

This paper deals with the homogenization of a mixed boundary value problem for the Laplace operator in a domain with locally periodic oscillating boundary. The Neumann condition is prescribed on the oscillating part of the boundary, and the…

Analysis of PDEs · Mathematics 2021-02-22 Srinivasan Aiyappan , Klas Pettersson

We study the spectral behavior of higher order elliptic operators upon domain perturbation. We prove general spectral stability results for Dirichlet, Neumann and intermediate boundary conditions. Moreover, we consider the case of the…

Analysis of PDEs · Mathematics 2018-05-15 José M. Arrieta , Pier Domenico Lamberti

We consider a nonlinear Neumann problem, with periodic oscillation in the elliptic operator and on the boundary condition. Our focus is on problems posed in half-spaces, but with general normal directions that may not be parallel to the…

Analysis of PDEs · Mathematics 2019-11-19 Sunhi Choi , Inwon Kim

We consider a general second order matrix operator in a multi-dimensional domain subject to a classical boundary condition. This operator is perturbed by a first order differential operator, the coefficients of which depend arbitrarily on a…

Analysis of PDEs · Mathematics 2022-10-04 D. I. Borisov

We consider a planar waveguide with "twisted" boundary conditions. By twisting we mean a special combination of Dirichlet and Neumann boundary conditions. Assuming that the width of the waveguide goes to zero, we identify the effective…

Analysis of PDEs · Mathematics 2014-03-25 D. Borisov , G. Cardone

This paper deals with the homogenization of fully nonlinear second order equation with an oscillating Dirichlet boundary data when the operator and boundary data are $\e$-periodic. We will show that the solution $u_\e$ converges to some…

Analysis of PDEs · Mathematics 2013-04-29 Ki-ahm Lee , Minha Yoo

This paper is concerned with a family of second-order elliptic systems in divergence form with rapidly oscillating periodic coefficients. We initiate the study of homogenization and boundary layers for Neumann problems with first-order…

Analysis of PDEs · Mathematics 2016-10-27 Zhongwei Shen , Jinping Zhuge

We consider a singularly perturbed second order elliptic system in the whole space. The coefficients of the systems fast oscillate and depend both of slow and fast variables. We obtain the homogenized operator and in the uniform norm sense…

Mathematical Physics · Physics 2007-05-23 Denis Borisov

We introduce a new constructive method for establishing lower bounds on convergence rates of periodic homogenization problems associated with divergence type elliptic operators. The construction is applied in two settings. First, we show…

Analysis of PDEs · Mathematics 2016-12-28 Hayk Aleksanyan

We study the second order elliptic equations of non-divergence form in a planar domain with complicated geometry. In this case the domain winds around a fixed circle infinitely many times and converges to it when the rotating angle goes to…

Analysis of PDEs · Mathematics 2026-02-18 Luan Hoang , Akif Ibragimov

The paper deals with homogenization problem for nonlinear elliptic and parabolic equations in a periodically perforated domain, a nonlinear Fourier boundary conditions being imposed on the perforation border. Under the assumptions that the…

Analysis of PDEs · Mathematics 2010-06-04 Andrey Piatnitski , Volodymyr Rybalko

We prove operator-norm resolvent convergence estimates for one-dimensional periodic differential operators with rapidly oscillating coefficients in the non-uniformly elliptic high-contrast setting, which has been out of reach of the…

Mathematical Physics · Physics 2016-08-24 Kirill D. Cherednichenko , Alexander V. Kiselev

The main purpose of this work is to study uniform regularity estimates for a family of elliptic operators $\{\mathcal{L}_\varepsilon, \varepsilon>0\}$, arising in the theory of homogenization, with rapidly oscillating periodic coefficients.…

Analysis of PDEs · Mathematics 2010-11-01 Carlos E. Kenig , Fanghua Lin , Zhongwei Shen

We prove the homogenization of fully nonlinear parabolic equations with periodic oscillating Dirichlet boundary conditions on certain general prescribed space-time domains. It was proved in [9,10] that for elliptic equations, the…

Analysis of PDEs · Mathematics 2022-03-09 Yuming Paul Zhang
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