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Related papers: On global dynamics of reaction--diffusion systems …

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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…

Probability · Mathematics 2026-05-27 Dionysis Milesis , Michael Salins

In this paper we analyse the asymptotic behaviour of some nonlocal diffusion problems with local reaction term in general metric measure spaces. We find certain classes of nonlinear terms, including logistic type terms, for which solutions…

Analysis of PDEs · Mathematics 2024-09-17 Aníbal Rodríguez-Bernal , Silvia Sastre-Gomez

It is well known that the dynamics of a Hamiltonian system depends crucially on whether or not it possesses nonlinear resonances. In the generic case, the set of nonlinear resonances consists of independent clusters of resonantly…

Exactly Solvable and Integrable Systems · Physics 2009-01-16 Miguel D. Bustamante , Elena Kartashova

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…

Dynamical Systems · Mathematics 2023-02-07 Said Kouachi

In this paper we consider a class of stochastic reaction-diffusion equations. We provide local well-posedness, regularity, blow-up criteria and positivity of solutions. The key novelties of this work are related to the use transport noise,…

Analysis of PDEs · Mathematics 2023-05-31 Antonio Agresti , Mark Veraar

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…

Analysis of PDEs · Mathematics 2016-02-10 Dieter Bothe , André Fischer , Michel Pierre , Guillaume Rolland

We derive a model for the non-isothermal reaction-diffusion equation. Combining ideas from non-equilibrium thermodynamics with the energetic variational approach we obtain a general system modeling the evolution of a non-isothermal chemical…

Analysis of PDEs · Mathematics 2021-02-03 Chun Liu , Jan-Eric Sulzbach

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…

Analysis of PDEs · Mathematics 2023-10-24 Said Kouachi

We study the dynamics of periodic wave trains in reaction-diffusion systems on the real line under large, fully nonlocalized modulations. We prove that solutions with nearby initial data converge, at an enhanced diffusive rate, to a…

Analysis of PDEs · Mathematics 2025-08-13 Joannis Alexopoulos , Björn de Rijk

In this study we consider the Hamiltonian approach for the construction of a map for a system with nonlinear resonant interaction, including phase trapping and phase bunching effects. We derive basic equations for a single resonant…

In this work we prove global existence and uniform boundedness of solutions of 2X2 reaction-diffusion systems with control of mass structure and nonlinearities of unlimited growth. Furthermore the results are obtained without restrictions…

Analysis of PDEs · Mathematics 2023-01-19 Said Kouachi

A reaction--diffusion replicator equation is studied. A novel method to apply the principle of global regulation is used to write down the model with explicit spatial structure. Properties of stationary solutions together with their…

Populations and Evolution · Quantitative Biology 2013-08-28 Artem S. Novozhilov , Vladimir P. Posvyanskii , Alexander S. Bratus

This paper analyzes the stability of a reactiondiffusion equation coupled with a finite-dimensional controller through Dirichlet boundary input and Neumann boundary output. Going against the flow, we intend to propose numerical certificates…

Optimization and Control · Mathematics 2023-03-09 Mathieu Bajodek , Hugo Lhachemi , Giorgio Valmorbida

General conditions are established under which reaction-cross-diffusion systems can undergo spatiotemporal pattern-forming instabilities. Recent work has focused on designing systems theoretically and experimentally to exhibit patterns with…

Pattern Formation and Solitons · Physics 2025-08-26 Edgardo Villar-Sepúlveda , Alan R. Champneys , Andrew L. Krause

A thorough analysis is performed to find traveling waves in a qualitative reaction-diffusion system inspired by a predator-prey model. We provide rigorous results coming from a standard local stability analysis, numerical bifurcation…

Chaotic Dynamics · Physics 2022-11-09 Edgardo Villar-Sepúlveda , Pablo Aguirre , Víctor F. Breña-Medina

We show that reaction-diffusion equations with almost-monotonic nonlinear terms are well-posed in $L^q(\Omega)$ for each $1\leq q < \infty$ and the solutions are globally defined.

Analysis of PDEs · Mathematics 2012-12-13 Aníbal Rodríguez-Bernal , Alejandro Vidal-López

The global existence of renormalised solutions and convergence to equilibrium for reaction-diffusion systems with non-linear diffusion are investigated. The system is assumed to have quasi-positive non-linearities and to satisfy an entropy…

Analysis of PDEs · Mathematics 2021-09-27 Klemens Fellner , Julian Fischer , Michael Kniely , Bao Quoc Tang

A system of equations of the reaction-diffusion type is studied in the framework of both the direct and the inverse prolongation structure. We find that this system allows an incomplete prolongation Lie algebra, which is used to find the…

solv-int · Physics 2009-10-30 E. Alfinito , V. Grassi , R. A. Leo , G. Profilo , G. Soliani

In this report, we present a dynamical systems' approach to study the exact nonlinear wave-particle interaction in relativistic regime. We give a particular attention to the effect of wave obliquity on the dynamics of the orbits by studying…

Plasma Physics · Physics 2012-03-13 A. Osmane , A. M. Hamza

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…

Analysis of PDEs · Mathematics 2020-06-24 Jeff Morgan , Bao Quoc Tang