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A generalisation of reaction diffusion systems and their travelling solutions to cases when the productive part of the reaction happens only on a surface in space or on a line on plane but the degradation and the diffusion happen in bulk…

动力系统 · 数学 2022-01-05 Anton S. Zadorin

For a class of reaction cross-diffusion systems of two equations with a cross-diffusion term in the first equation and with self-diffusion terms, we prove that the unique local smooth solution given by Amann theorem is actually global. This…

偏微分方程分析 · 数学 2022-02-22 Jessica Guerand , Angeliki Menegaki , Ariane Trescases

A general class of cross-diffusion systems for two population species in a bounded domain with no-flux boundary conditions and Lotka-Volterra-type source terms is analyzed. Although the diffusion coefficients are assumed to depend linearly…

偏微分方程分析 · 数学 2015-12-04 Ansgar Jüngel , Nicola Zamponi

We analyze semilinear reaction-diffusion systems that are mass controlled, and have nonlinearities that satisfy critical growth rates. The systems under consideration are only assumed to satisfy natural assumptions, namely the preservation…

偏微分方程分析 · 数学 2023-05-04 Chunyou Sun , Bao Quoc Tang , Juan Yang

In this paper we analyse a finite volume scheme for a nonlocal version of the Shigesada-Kawazaki-Teramoto (SKT) cross-diffusion system. We prove the existence of solutions to the scheme, derive qualitative properties of the solutions and…

数值分析 · 数学 2024-01-19 Maxime Herda , Antoine Zurek

Nonlocal cross-diffusion systems on the torus, arising in population dynamics and neuroscience, are analyzed. The global existence of weak solutions, the weak-strong uniqueness, and the localization limit are proved. The kernels are assumed…

偏微分方程分析 · 数学 2021-09-28 Ansgar Jüngel , Stefan Portisch , Antoine Zurek

We introduce a stochastic individual model for the spatial behavior of an animal population of dispersive and competitive species, considering various kinds of biological effects, such as heterogeneity of environmental conditions, mutual…

概率论 · 数学 2016-07-05 Joaquin Fontbona , Sylvie Méléard

The paper deals with reaction-diffusion equations involving a hysteretic discontinuity in the source term, which is defined at each spatial point. Such problems describe biological processes and chemical reactions in which diffusive and…

偏微分方程分析 · 数学 2014-04-17 Pavel Gurevich , Sergey Tikhomirov

The close-to-equilibrium regularity of solutions to a class of reaction-diffusion systems is investigated. The considered systems typically arise from chemical reaction networks and satisfy a complex balanced condition. Under some…

偏微分方程分析 · 数学 2017-11-29 Bao Quoc Tang

We investigate the existence and uniqueness of strong solutions up to an explosion time for regime-switching diffusion processes in an infinite state space. Instead of concrete conditions on coefficients, our existence and uniqueness result…

概率论 · 数学 2016-03-14 Shao-Qin Zhang

Global existence of strong solutions and the existence of global and atrractors are established for generalized Shigesada-Kawasaki-Teramoto models on planar domains. The cross diffusion and reaction can have polynomial growth of any order.

偏微分方程分析 · 数学 2016-05-19 Dung Le

We investigate a class of systems of partial differential equations with nonlinear cross-diffusion and nonlocal interactions, which are of interest in several contexts in social sciences, finance, biology, and real world applications.…

偏微分方程分析 · 数学 2017-10-05 M. Di Francesco , A. Esposito , S. Fagioli

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

In this work, we consider a reaction-diffusion system, modeling the interaction between nutrients, phytoplanktons and zooplanktons. Using a semigroup approach in $L^2$, we prove global existence, uniqueness and positivity of the solutions.…

偏微分方程分析 · 数学 2020-09-14 Antoine Perasso , Quentin Richard , Irene Azzali , Ezio Venturino

We investigate the convergence of spatial discretizations for reaction-diffusion systems with mass-action law satisfying a detailed balance condition. Considering systems on the d-dimensional torus, we construct appropriate space-discrete…

偏微分方程分析 · 数学 2025-04-10 Georg Heinze , Alexander Mielke , Artur Stephan

In this paper, we prove a uniqueness result in the inverse problem of determining several non-constant coefficients of one-dimensional reaction-diffusion equations. Such reaction-diffusion equations include the classical model of…

偏微分方程分析 · 数学 2011-05-30 Michel Cristofol , Jimmy Garnier , Francois Hamel , Lionel Roques

We study the steady state of a stochastic particle system on a two-dimensional lattice, with particle influx, diffusion and desorption, and the formation of a dimer when particles meet. Surface processes are thermally activated, with…

统计力学 · 物理学 2015-05-30 A. Wolff , I. Lohmar , J. Krug , O. Biham

We derive thermodynamically consistent models of reaction-diffusion equations coupled to a heat equation. While the total energy is conserved, the total entropy serves as a driving functional such that the full coupled system is a gradient…

偏微分方程分析 · 数学 2018-10-16 Jan Haskovec , Sabine Hittmeir , Peter Markowich , Alexander Mielke

We prove global existence and uniqueness of solutions to a Cahn-Hilliard system with nonlinear viscosity terms and nonlinear dynamic boundary conditions. The problem is highly nonlinear, characterized by four nonlinearities and two separate…

偏微分方程分析 · 数学 2020-01-07 Luca Scarpa

Non-local advection is a key process in a range of biological systems, from cells within individuals to the movement of whole organisms. Consequently, in recent years, there has been increasing attention on modelling non-local advection…

偏微分方程分析 · 数学 2021-06-14 Valeria Giunta , Thomas Hillen , Mark A. Lewis , Jonathan R. Potts