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We study reaction-diffusion equations in cylinders with possibly nonlinear diffusion and possibly nonlinear Neumann boundary conditions. We provide a geometric Poincar\'e-type inequality and classification results for stable solutions, and…

偏微分方程分析 · 数学 2016-06-28 Serena Dipierro , Nicola Soave , Enrico Valdinoci

Reaction-diffusion equations with a nonlinear source have been widely used to model various systems, with particular application to biology. Here, we provide a solution technique for these types of equations in $N$-dimensions. The…

偏微分方程分析 · 数学 2016-08-24 P Broadbridge , BH Bradshaw-Hajek

The purpose of this paper is to prove global existence of solutions for general systems of reaction diffusion equations with nonlinearities for which only two main proprieties hold: Quasi-Positivity and balance law but with two…

动力系统 · 数学 2023-02-07 Said Kouachi

In this paper, we consider initial-boundary value problems for two-component nonlinear systems of time-fractional diffusion equations with the homogeneous Neumann boundary condition and non-negative initial values. The main results are the…

偏微分方程分析 · 数学 2024-05-28 Dian Feng , Masahiro Yamamoto

New estimates and global existence results are provided for a class of systems of cross diffusion equations arising from the modeling of chemotaxis with local sensing, possibly featuring a growth term of logistic-type as well. For sublinear…

偏微分方程分析 · 数学 2022-02-22 Laurent Desvillettes , Philippe Laurençot , Ariane Trescases , Michael Winkler

We study global existence, uniqueness and positivity of weak solutions of a class of reaction-diffusion systems of chemical kinetics type, under the assumptions of logarithmic Sobolev inequality and appropriate exponential integrability of…

概率论 · 数学 2014-05-07 Pierre Fougères , Ivan Gentil , Boguslaw Zegarlinski

We use a new method in the study of Fisher-KPP reaction-diffusion equations to prove existence of transition fronts for inhomogeneous KPP-type non-linearities in one spatial dimension. We also obtain new estimates on entire solutions of…

偏微分方程分析 · 数学 2011-03-17 Andrej Zlatos

We prove existence and uniqueness of global solutions for a class of reaction-advection-anisotropic-diffusion systems whose reaction terms have a "triangular structure". We thus extend previous results to the case of time-space dependent…

偏微分方程分析 · 数学 2016-02-10 Dieter Bothe , André Fischer , Michel Pierre , Guillaume Rolland

This paper studies the solutions of a reaction--diffusion system with nonlinearities that generalise the Lengyel--Epstein and FitzHugh--Nagumo nonlinearities. Sufficient conditions are derived for the global asymptotic stability of the…

偏微分方程分析 · 数学 2018-09-25 Salem Abdelmalek , Samir Bendoukha , Mokhtar Kirane

We consider a reaction-diffusion system where some components react and diffuse on the boundary of a region, while other components diffuse in the interior and react with those on the boundary through mass transport. We establish criteria…

偏微分方程分析 · 数学 2015-12-31 Vandana Sharma , Jeff Morgan

Reaction-Diffusion equations can present solutions in the form of traveling waves. Such solutions evolve in different spatial and temporal scales and it is desired to construct numerical methods that can adopt a spatial refinement at…

数值分析 · 数学 2021-03-16 Jae-Hun Jung , Daniel Olmos-Liceaga

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

The global-in-time existence of renormalized solutions to reaction-cross-diffu-sion systems for an arbitrary number of variables in bounded domains with no-flux boundary conditions is proved. The cross-diffusion part describes the…

偏微分方程分析 · 数学 2017-11-07 Xiuqing Chen , Ansgar Jüngel

In this paper, we prove global-in-time existence of strong solutions to a class of fractional parabolic reaction-diffusion systems posed in a bounded domain of $\mathbb{R}^N$. The nonlinear reactive terms are assumed to satisfy natural…

偏微分方程分析 · 数学 2023-06-07 Maha Daoud , El-Haj Laamri , Azeddine Baalal

We study the boundedness and convergence to equilibrium of weak solutions to reaction-diffusion systems with nonlinear diffusion. The nonlinear diffusion is of porous medium type and the nonlinear reaction terms are assumed to grow…

偏微分方程分析 · 数学 2017-11-09 Klemens Fellner , Evangelos Latos , Bao Quoc Tang

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

We establish the existence of solutions to a class of non-linear stochastic differential equation of reaction-diffusion type in an infinite-dimensional space, with diffusion corresponding to a given transition kernel. The solution obtained…

In this paper, we consider a time-fractional reaction-diffusion system with the same nonlinearities of the Newton-Leipnik chaotic system. Through analytical tools and numerical results, we derive sufficient conditions for the asymptotic…

偏微分方程分析 · 数学 2018-09-25 Djamel Mansouri , Salem Abdelmalek , Samir Bendoukha , Amar Youkana

In this paper we consider the mathematical relationship between nonlocal interactions of convolution type and multiple diffusive substances in high dimensions. Motivated by that the nonlocal evolution equations reproduce similar patterns to…

偏微分方程分析 · 数学 2025-11-07 Hiroshi Ishii , Yoshitaro Tanaka

In this article, we systematically explain how to apply the analytical technique called the invariant subspace method to find various types of analytical solutions for a coupled nonlinear time-fractional system of partial differential…

偏微分方程分析 · 数学 2024-06-17 K. S. Priyendhu , P. Prakash , M. Lakshmanan