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In present paper we study a boundary value problem for a mixed parabolic-hyperbolic type equation in a rectangular domain and prove the existence of unique solution of this problem. In theory of boundary value problems for second order…

偏微分方程分析 · 数学 2015-05-11 Djumaklych Amanov

Diffusion of a penetrating liquid in a polymeric material does not often satisfy the classical diffusion equations and requires taking relaxational (viscoelastic) properties of the polymer into account. We investigate a boundary value…

偏微分方程分析 · 数学 2015-05-14 Dmitry A. Vorotnikov

The static limit of Lorentz-violating electrodynamics in vacuum and in media is investigated. Features of the general solutions include the need for unconventional boundary conditions and the mixing of electrostatic and magnetostatic…

高能物理 - 唯象学 · 物理学 2009-09-25 Quentin G. Bailey , Alan Kostelecky

We investigate a coagulation-fragmentation equation with boundary data, establishing the well-posedness of the initial value problem when the coagulation kernels are bounded at zero and showing existence of solutions for the singular…

偏微分方程分析 · 数学 2020-11-24 Iñigo U. Erneta

While there exist now formulations of initial boundary value problems for Einstein's field equations which are well posed and preserve constraints and gauge conditions, the question of geometric uniqueness remains unresolved. For two…

广义相对论与量子宇宙学 · 物理学 2009-09-28 Helmut Friedrich

We consider magnetic friction between two square lattices of the ferromagnetic Ising model of finite thickness. We analyze the dependence on the boundary conditions and the sample thickness. Monte Carlo results indicate that the setup…

统计力学 · 物理学 2019-05-15 Kentaro Sugimoto

We establish well-posedness of initial-boundary value problems for continuity equations with BV (bounded total variation) coefficients. We do not prescribe any condition on the orientation of the coefficients at the boundary of the domain.…

偏微分方程分析 · 数学 2013-04-04 Gianluca Crippa , Carlotta Donadello , Laura V. Spinolo

We address periodic-image errors arising from the use of periodic boundary conditions to describe systems that do not exhibit full three-dimensional periodicity. The difference between the periodic potential, as straightforwardly obtained…

其他凝聚态物理 · 物理学 2009-11-13 Ismaila Dabo , Boris Kozinsky , Nicholas E. Singh-Miller , Nicola Marzari

We study elliptic and parabolic boundary value problems in spaces of mixed scales with mixed smoothness on the half space. The aim is to solve boundary value problems with boundary data of negative regularity and to describe the…

偏微分方程分析 · 数学 2021-05-27 Felix Hummel

While doing electromagnetic analysis using FEM (Finite element method), if we can implement the underlying symmetric nature of the problem, there will be significant reduction in the computational cost. Symmetric nature of the problem can…

信号处理 · 电气工程与系统科学 2023-03-22 Durgarao Kamireddy , Sreekanth Karanam , Arup Nandy

We study boundary value problems for degenerate elliptic equations and systems with square integrable boundary data. We can allow for degeneracies in the form of an $A_{2}$ weight. We obtain representations and boundary traces for solutions…

经典分析与常微分方程 · 数学 2014-04-16 Pascal Auscher , Andreas Rosén , David Rule

We prove existence, uniqueness and regularity results for mixed boundary value problems associated with fully nonlinear, possibly singular or degenerate elliptic equations. Our main result is a global H\"older estimate for solutions,…

偏微分方程分析 · 数学 2021-04-07 Isabeau Birindelli , Francoise Demengel , Fabiana Leoni

In recent work, we used pseudo-differential theory to establish conditions that the initial-boundary value problem for second order systems of wave equations be strongly well-posed in a generalized sense. The applications included the…

广义相对论与量子宇宙学 · 物理学 2009-11-13 H. -O. Kreiss , O. Reula , O. Sarbach , J. Winicour

In this paper, we study the Dirichlet boundary value problem of steady-state relativistic Boltzmann equation in half-line with hard potential model, given the data for the outgoing particles at the boundary and a relativistic global…

偏微分方程分析 · 数学 2024-11-12 Yi Wang , Li Li , Zaihong Jiang

This paper considers to the problems of diffraction of electromagnetic waves on a half-plane, which has a finite inclusion in the form of a Lipschitz curve. The diffraction problem formulated as boundary value problem for Helmholtz…

数学物理 · 物理学 2018-03-06 E. Lipachev

In this paper, we are concerned with the initial-boundary value problem to the 2D magneto-micropolar system with zero angular viscosity in a smooth bounded domain. We prove that there exists a unique global strong solution of such a system…

偏微分方程分析 · 数学 2021-05-12 Shasha Wang , Wen-Qing Xu , Jitao Liu

The aim of this paper is to draw attention to an interesting semilinear parabolic equation that arose when describing the chaotic dynamics of a polymer molecule in a liquid. This equation is nonlocal in time and contains a term, called the…

偏微分方程分析 · 数学 2020-12-30 Victor N. Starovoitov

Electromagnetic phenomena are mathematically described by solutions of boundary value problems. For exploiting symmetries of these boundary value problems in a way that is offered by techniques of dimensional reduction, it needs to be…

A set of four scalar conditions involving normal components of the fields D and B and their normal derivatives at a planar surface is introduced, among which different pairs can be chosen to represent possible boundary conditions for the…

经典物理 · 物理学 2015-05-13 I. V. Lindell , A. H. Sihvola

The unique existence of a weak solution to the homogeneous closed Dirichlet problem on certain D-star-shaped domains is proven for a mixed elliptic-hyperbolic equation. Equations of this kind arise in models for electromagnetic wave…

数学物理 · 物理学 2010-12-20 Thomas H. Otway