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In this paper, we consider the wave equation with variable coefficients and boundary damping and supercritical source terms. The goal of this work is devoted to prove the local and global existence, and classify decay rate of energy…

偏微分方程分析 · 数学 2024-03-07 Tae Gab Ha

We develop a new semi-analytical method for solving multilayer diffusion problems with time-varying external boundary conditions and general internal boundary conditions at the interfaces between adjacent layers. The convergence rate of the…

数值分析 · 数学 2018-04-26 Elliot J. Carr , Nathan G. March

Ferrofluids are a class of materials that exhibit both fluid and magnetic properties. We consider a two-phase diffuse interface model for the dynamics of ferrofluids on a bounded domain. One phase is assumed to be magnetic, the other phase…

偏微分方程分析 · 数学 2025-07-08 Samuel Lanthaler , Franziska Weber

We consider reaction-diffusion systems where components diffuse inside the domain and react on the surface through mass transport type boundary conditions on an evolving domain. Using Lyapunov functional and duality arguments, we establish…

偏微分方程分析 · 数学 2021-02-02 Vandana Sharma , Jyotshana V. Prajapat

This article is concerned with the existence and the long time behavior of weak solutions to certain coupled systems of fourth-order degenerate parabolic equations of gradient flow type. The underlying metric is a Wasserstein-like…

偏微分方程分析 · 数学 2016-09-23 Daniel Matthes , Jonathan Zinsl

We give a review of results on superpolynomial decay of correlations, and polynomial decay of correlations for nonuniformly expanding semiflows and nonuniformly hyperbolic flows. A self-contained proof is given for semiflows. Results for…

动力系统 · 数学 2018-09-26 Ian Melbourne

We deal with the obstacle problem for the porous medium equation in the slow diffusion regime $m>1$. Our main interest is to treat fairly irregular obstacles assuming only boundedness and lower semicontinuity. In particular, the considered…

偏微分方程分析 · 数学 2018-07-23 Riikka Korte , Pekka Lehtelä , Stefan Sturm

In this article we prove the global existence of weak solutions for a diffuse interface model in a bounded domain (both in 2D and 3D) involving incompressible magnetic fluids with unmatched densities. The model couples the incompressible…

偏微分方程分析 · 数学 2021-06-09 Martin Kalousek , Sourav Mitra , Anja Schlömerkemper

In this paper the long time behaviour of the solutions of 3-D strongly damped wave equation is studied. It is shown that the semigroup generated by this equation possesses a global attractor in H_{0}^{1}(\Omega)\times L_{2}(\Omega) and then…

偏微分方程分析 · 数学 2012-02-28 Azer Khanmamedov

We develop a "weak Wa\.zewski principle" for discrete and continuous time dynamical systems on metric spaces having a weaker topology to show that attractors can be continued in a weak sense. After showing that the Wasserstein space of a…

动力系统 · 数学 2011-03-18 Martin Kell

In this work, we study the global existence of solutions for a class of semilinear nonlocal reaction-diffusion systems with $m$ components on a bounded domain $\Omega$ in $\mathbb{R}^n$ with smooth boundary. The initial data is assumed to…

偏微分方程分析 · 数学 2025-10-09 Md Shah Alam , Jeff Morgan

We consider impulsive semiflows defined on compact metric spaces and deduce a variational principle. In particular, we generalize the classical notion of topological entropy to our setting of discontinuous semiflows.

动力系统 · 数学 2014-10-10 Jose F. Alves , Maria Carvalho , Carlos Vasquez

Reduction operators (called often nonclassical symmetries) of variable coefficient semilinear reaction-diffusion equations with power nonlinearity $f(x)u_t=(g(x)u_x)_x+h(x)u^m$ ($m\neq0,1,2$) are investigated using the algorithm suggested…

可精确求解与可积系统 · 物理学 2009-04-23 O. O. Vaneeva , R. O. Popovych , C. Sophocleous

We consider a Nicholson's equation with multiple pairs of time-varying delays and nonlinear terms given by mixed monotone functions. Sufficient conditions for the permanence, local stability and global attractivity of its positive…

经典分析与常微分方程 · 数学 2021-12-22 Teresa Faria , Henrique C. Prates

We develop mixed finite element methods for nonlinear reaction-diffusion equations with interfaces which have Robin-type interface conditions. We introduce the velocity of chemicals as new variables and reformulate the governing equations.…

数值分析 · 数学 2023-04-27 Jeonghun J. Lee , Xinran Jin

We review recent results on global attractors of U(1)-invariant dispersive Hamiltonian systems. We study several models based on the Klein-Gordon equation and sketch the proof that in these models, under certain generic assumptions, the…

偏微分方程分析 · 数学 2008-04-25 Alexander Komech , Andrew Komech

We consider initial-boundary-value problems for a class of nonlinear third order equations having non-autonomous forcing terms and get new asymptotic stability results by means of the Liapunov second method. The class includes equations…

数学物理 · 物理学 2012-09-28 Armando D'Anna , Gaetano Fiore

This paper deals with a parabolic partial differential equation that includes a non-linear nonlocal in time term. This term is the product of a so-called interaction potential and the solution of the problem. The interaction potential…

偏微分方程分析 · 数学 2021-03-30 Victor N. Starovoitov

In this paper, we study flows associated to Sobolev vector fields with subexponentially integrable divergence. Our approach is based on the transport equation following DiPerna-Lions [DPL89]. A key ingredient is to use a quantitative…

经典分析与常微分方程 · 数学 2016-02-04 Albert Clop , Renjin Jiang , Joan Mateu , Joan Orobitg

We study a thermodynamically consistent diffuse-interface model that describes the motion of two macroscopically immiscible, incompressible, and viscous Newtonian fluids with unmatched densities. This model is compatible with continuum…

偏微分方程分析 · 数学 2026-04-30 Mingwen Fei , Xiang Fei , Yadong Liu , Hao Wu