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In this work, we study the mathematical analysis of a coupled system of two reaction-diffusion-advection equations and Danckwerts boundary conditions, which models the interaction between a microbial population (e.g., bacterias) and a…

偏微分方程分析 · 数学 2015-07-03 M. Crespo , B. Ivorra , A. M Ramos

We study a one-dimensional cross-diffusion system for two interacting populations on the torus, with a linear pressure law and different mobilities. For arbitrary bounded non-negative initial data, we show that any good approximation…

偏微分方程分析 · 数学 2026-04-17 Charles Elbar

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

This paper investigates the global well-posedness of a class of reaction-advection-diffusion models with nonlinear diffusion and Lotka-Volterra dynamics. We prove the existence and uniform boundedness of the global-in-time solutions to the…

偏微分方程分析 · 数学 2019-05-21 Qi Wang , Jingyue Yang , Feng Yu

We consider a diffusion process on an evolving surface with a piecewise Lipschitz-continuous boundary from an energetic point of view. We employ an energetic variational approach with both surface divergence and transport theorems to derive…

数学物理 · 物理学 2018-10-19 Hajime Koba

This paper treats the solvability of a semilinear reaction-diffusion system, which incorporates transport (diffusion) and reaction effects emerging from two separated spatial scales: $x$ - macro and $y$ - micro. The system's origin connects…

偏微分方程分析 · 数学 2012-02-10 Tasnim Fatima , Adrian Muntean , Toyohiko Aiki

We study the uniform boundedness of solutions to reaction-diffusion systems possessing a Lyapunov-like function and satisfying an {\it intermediate sum condition}. This significantly generalizes the mass dissipation condition in the…

偏微分方程分析 · 数学 2020-06-24 Jeff Morgan , Bao Quoc Tang

This paper shows the global existence and boundedness of solutions of a reaction diffusion system modeling liver infections. The existence proof is presented step by step and the focus lies on the interpretation of intermediate results in…

偏微分方程分析 · 数学 2023-08-02 Cordula Reisch , Dirk Langemann

This paper aims to prove the global existence of solutions for coupled reaction diffusion equations with a balance Law and nonlinearities with a non constant sign. The case when one (or both) of the components of the solution is not a…

偏微分方程分析 · 数学 2023-10-24 Said Kouachi

We consider the numerical solution of coupled volume-surface reaction-diffusion systems having a detailed balance equilibrium. Based on the conservation of mass, an appropriate quadratic entropy functional is identified and an…

数值分析 · 数学 2015-11-04 Herbert Egger , Klemens Fellner , Jan-Frederik Pietschmann , Bao Quoc Tang

In this paper, we study unique, globally defined uniformly bounded weak solutions for a class of semilinear reaction-diffusion-advection systems. The coefficients of the differential operators and the initial data are only required to be…

偏微分方程分析 · 数学 2021-09-10 William E Fitzgibbon , Jeff Morgan , Bao Quoc Tang , Hong-Ming Yin

The paper is devoted to the study of slightly supercritical active scalars with nonlocal diffusion. We prove global regularity for the surface quasi-geostrophic (SQG) and Burgers equations, when the diffusion term is supercritical by a…

偏微分方程分析 · 数学 2016-01-20 Michael Dabkowski , Alexander Kiselev , Luis Silvestre , Vlad Vicol

This paper is devoted to the use of the entropy and duality methods for the existence theory of reaction-cross diffusion systems consisting of two equations, in any dimension of space. Those systems appear in population dynamics when the…

偏微分方程分析 · 数学 2013-02-06 Laurent Desvillettes , Thomas Lepoutre , Ayman Moussa

Some results on cross-diffusion systems with entropy structure are reviewed. The focus is on local-in-time existence results for general systems with normally elliptic diffusion operators, due to Amann, and global-in-time existence theorems…

偏微分方程分析 · 数学 2017-10-05 Ansgar Jüngel

We briefly review some common diffusion-limited reactions with emphasis on results for two-species reactions with anisotropic hopping. Our review also covers single-species reactions. The scope is that of providing reference and general…

凝聚态物理 · 物理学 2010-10-12 Antonio M. R. Cadilhe , M. Lawrence Glasser , Vladimir Privman

This paper is devoted to the study of systems of reaction-cross diffusion equations arising in population dynamics. New results of existence of weak solutions are presented, allowing to treat systems of two equations in which one of the…

偏微分方程分析 · 数学 2014-10-28 Laurent Desvillettes , Thomas Lepoutre , Ayman Moussa , Ariane Trescases

We study systems of reaction-diffusion equations perturbed by multiplicative noise, where the reaction terms satisfy quasipositivity, a triangular mass-control structure, and polynomial growth. Our results apply to a broad class of…

概率论 · 数学 2026-05-27 Dionysis Milesis , Michael Salins

Many mathematical models for biological phenomena, such as the spread of diseases, are based on reaction-diffusion equations for densities of interacting cell populations. We present a consistent derivation of reaction-diffusion equations…

偏微分方程分析 · 数学 2026-02-23 Marzia Bisi , Davide Cusseddu , Ana Jacinta Soares , Romina Travaglini

We introduce an extension of the concept of renormalised solutions for entropy-dissipating reaction-diffusion systems due to J. Fischer (Arch. Ration. Mech. Anal. 218, 2015) to systems coupled by nonlinear interface conditions. For this…

偏微分方程分析 · 数学 2026-02-26 Katharina Hopf , Bao Quoc Tang

We consider some cross diffusion systems which is inspired by models in mathematical biology/ecology, in particular the Shigesada-Kawasaki-Teramoto (SKT) model in population biology. We establish the global existence of strong solutions to…

偏微分方程分析 · 数学 2019-10-21 Dung Le