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Motivated by the study of bacteria's response to environmental conditions, we consider the doubly degenerate nutrient taxis system \begin{align*} \begin{cases} u_t=\nabla\cdot(uv\nabla u)-\chi\nabla\cdot(u^{\alpha}v\nabla v)+\ell uv,\\…

偏微分方程分析 · 数学 2025-12-16 Bao-Ngoc Tran , Juan Yang

The global-in-time existence of nonnegative bounded weak solutions to a class of cross-diffusion systems for two population species is proved. The diffusivities are assumed to depend linearly on the population densities in such a way that a…

偏微分方程分析 · 数学 2014-04-25 Ansgar Jüngel , Nicola Zamponi

This paper is devoted to the full system of incompressible liquid crystals, as modeled in the Q-tensor framework. The main purpose is to establish the uniqueness of weak solutions in a two dimensional setting, without imposing an extra…

偏微分方程分析 · 数学 2016-03-11 Francesco De Anna , Arghir Zarnescu

We consider quasi-static poroelastic systems with incompressible constituents. The nonlinear permeability is taken to be dependent on solid dilation, and physical types of boundary conditions (Dirichlet, Neumann, and mixed) for the fluid…

偏微分方程分析 · 数学 2022-02-23 Lorena Bociu , Boris Muha , Justin T. Webster

We prove global existence of a nonnegative weak solution to a degenerate parabolic system, which models the spreading of insoluble surfactant on a thin liquid film.

偏微分方程分析 · 数学 2010-07-26 Joachim Escher , Matthieu Hillairet , Philippe Laurencot , Christoph Walker

We study a fractional cross-diffusion system that describes the evolution of multi-species populations in the regime of large-distance interactions in a bounded domain. We prove existence and weak-strong uniqueness results for the…

偏微分方程分析 · 数学 2026-01-19 Nicola De Nitti , Nicola Zamponi

We revisit a classical continuum model for the diffusion of multiple species with size-exclusion constraint, which leads to a degenerate nonlinear cross-diffusion system. The purpose of this article is twofold: first, it aims at a…

偏微分方程分析 · 数学 2022-08-04 Katharina Hopf , Martin Burger

We consider a two-dimensional MHD model describing the evolution of viscous, compressible and electrically conducting fluids under the action of vertical magnetic field without resistivity. Existence of global weak solutions is established…

偏微分方程分析 · 数学 2019-07-02 Yang Li , Yongzhong Sun

The weak-strong uniqueness for Maxwell--Stefan systems and some generalized systems is proved. The corresponding parabolic cross-diffusion equations are considered in a bounded domain with no-flux boundary conditions. The key points of the…

偏微分方程分析 · 数学 2021-10-12 Xiaokai Huo , Ansgar Jüngel , Athanasios E. Tzavaras

The aim of this work is to study the global existence of solutions for some coupled systems of reaction diffusion which describe the spread within a population of infectious disease. We consider a triangular matrix diffusion and we show…

偏微分方程分析 · 数学 2011-02-01 Abdelmalek Salem , Youkana Amar

The rigorous asymptotics from reaction-cross-diffusion systems for three species with known entropy to cross-diffusion systems for two variables is investigated. The equations are studied in a bounded domain with no-flux boundary…

偏微分方程分析 · 数学 2017-10-11 E. S. Daus , L. Desvillettes , A. Jüngel

We analyze a diffuse interface model that describes the dynamics of incompressible two-phase flows with chemotaxis effect. The PDE system couples a Navier-Stokes equation for the fluid velocity, a convective Cahn-Hilliard equation for the…

偏微分方程分析 · 数学 2020-02-04 Jingning He

We establish the uniqueness and regularity of weak (and very weak) solutions to a class of cross diffusion systems which is inspired by models in mathematical biology/ecology, in particular the Shigesada-Kawasaki-Teramoto (SKT) model in…

偏微分方程分析 · 数学 2019-06-11 Dung Le

Bounded weak solutions are constructed for a degenerate parabolic system with a full diffusion matrix, which is a generalized version of the thin film Muskat system. Boundedness is achieved with the help of a sequence $(\mathcal{E}_n)_{n\ge…

偏微分方程分析 · 数学 2022-01-19 Philippe Laurençot , Bogdan-Vasile Matioc

The uniqueness of bounded weak solutions to strongly coupled parabolic equations in a bounded domain with no-flux boundary conditions is shown. The equations include cross-diffusion and drift terms and are coupled selfconsistently to the…

偏微分方程分析 · 数学 2017-06-28 Xiuqing Chen , Ansgar Jüngel

In this work we study a degenerate pseudo-parabolic system with cross diffusion describing the evolution of the densities of an unsaturated two-phase flow mixture with dynamic capillary pressure in porous medium with saturation-dependent…

偏微分方程分析 · 数学 2019-05-27 Esther S. Daus , Josipa-Pina Milišić , Nicola Zamponi

The purpose of this article is to investigate the emergence of cross-diffusion in the time evolution of two slow-fast species in competition. A class of triangular cross-diffusion system is obtained as the singular limit of a fast…

偏微分方程分析 · 数学 2025-06-25 Elisabetta Brocchieri , Lucilla Corrias

In this paper, we propose a weak formulation of the singular diffusion equation subject to the dynamic boundary condition. The weak formulation is based on a reformulation method by an evolution equation including the subdifferential of a…

偏微分方程分析 · 数学 2017-05-09 Ryota Nakayashiki , Ken Shirakawa

We investigate uniqueness of weak solutions for a system of partial differential equations capturing behavior of magnetoelastic materials. This system couples the Navier-Stokes equations with evolutionary equations for the deformation…

偏微分方程分析 · 数学 2018-06-13 Anja Schlömerkemper , Josef Žabenský

First, a new sufficient condition for uniqueness of weak solutions is proved for the system of 2D viscous Primitive Equations. Second, global existence and uniqueness are established for several classes of weak solutions with partial…

偏微分方程分析 · 数学 2018-08-10 Ning Ju