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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…

最优化与控制 · 数学 2023-03-09 Mathieu Bajodek , Hugo Lhachemi , Giorgio Valmorbida

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

In this note, we demonstrated for the first time that one can derive an expression for the effective diffusion coefficient, equal to the Lifson-Jackson formula, using a subsequent homogenization of the 1D reaction-diffusion-advection…

化学物理 · 物理学 2016-08-03 Steffen Martens

In this paper we analyze the long-time behavior of solutions to conservation laws with nonlinear diffusion terms of different types: saturating dissipation (monotone and non monotone) and singular nonlinear diffusions are considered. In…

偏微分方程分析 · 数学 2024-05-21 Raffaele Folino , Marta Strani

Idealized networks of integrate-and-fire neurons with impulse-like interactions obey McKean-Vlasov diffusion equations in the mean-field limit. These equations are prone to blowups: for a strong enough interaction coupling, the mean-field…

概率论 · 数学 2022-05-17 Thibaud Taillefumier , Phillip Whitman

We consider a system of reaction-diffusion equations with passive advection term and Lewis number not equal to one. Such systems are used to describe chemical reactions in a flow in a situation where temperature and material diffusivities…

混沌动力学 · 物理学 2009-10-31 Alexander Kiselev , Leonid Ryzhik

This paper studies the design of a finite-dimensional output feedback controller for the stabilization of a reaction-diffusion equation in the presence of a sector nonlinearity in the boundary input. Due to the input nonlinearity, classical…

最优化与控制 · 数学 2022-07-13 Hugo Lhachemi , Christophe Prieur

In this paper we consider a one-dimensional fully parabolic quasilinear Keller-Segel system with critical nonlinear diffusion. We show uniform-in-time boundedness of solutions, which means, that unlike in higher dimensions, there is no…

偏微分方程分析 · 数学 2019-08-20 Bartosz Bieganowski , Tomasz Cieślak , Kentarou Fujie , Takasi Senba

This paper establishes existence, uniqueness, and an L^1-comparison principle for weak solutions of a PDE system modeling phase transition reaction-diffusion in congested crowd motion. We consider a general reaction term and mixed…

偏微分方程分析 · 数学 2025-09-17 Noureddine Igbida , Fahd Karami , Driss Meskine

We classify the self-similar blow-up profiles for the following reaction-diffusion equation with critical strong weighted reaction and unbounded weight: $$ \partial_tu=\partial_{xx}(u^m) + |x|^{\sigma}u^p, $$ posed for $x\in\real$,…

偏微分方程分析 · 数学 2020-06-02 Razvan Gabriel Iagar , Ariel Sánchez

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,…

偏微分方程分析 · 数学 2023-05-31 Antonio Agresti , Mark Veraar

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

This paper is concerned with the uniqueness, existence, comparison principle and long-time behavior of solutions to the initial-boundary value problem for a unidirectional diffusion equation. The unidirectional evolution often appears in…

偏微分方程分析 · 数学 2015-01-07 Goro Akagi , Masato Kimura

This paper deals with the quasilinear parabolic-elliptic chemotaxis system with logistic source and nonlinear production, \begin{equation*} \begin{cases} u_t=\nabla \cdot (D(u) \nabla u) - \nabla \cdot (S(u)\nabla v) + \lambda u - \mu…

偏微分方程分析 · 数学 2021-05-24 Yuya Tanaka

This work is devoted to almost sure and moment exponential stability of regime-switching jump diffusions. The Lyapunov function method is used to derive sufficient conditions for stabilities for general nonlinear systems; which further…

概率论 · 数学 2017-08-10 Zhen Chao , Kai Wang , Chao Zhu , Yanling Zhu

Making sense of complex inhomogeneous systems composed of many interacting species is a grand challenge that pervades basically all natural sciences. Phase separation and pattern formation in reaction-diffusion systems have been largely…

软凝聚态物质 · 物理学 2025-06-04 Joshua F. Robinson , Thomas Machon , Thomas Speck

In this work, we study the global existence of solutions for a class of semilinear nonlocal reaction-diffusion systems with $m$ components on a bounded domain $\Omega$ in $\mathbb{R}^n$ with smooth boundary. The initial data is assumed to…

偏微分方程分析 · 数学 2025-10-09 Md Shah Alam , Jeff Morgan

We investigate the Boltzmann equation with spatial smearing, diffusive boundary conditions, and Lions' collision kernel. Both, the physical as well as the velocity space, are assumed to be bounded. Existence and uniqueness of a stationary…

偏微分方程分析 · 数学 2018-07-31 Jörg-Uwe Löbus

We study a chemotaxis-growth system with nonlinear local and nonlocal reactions and gradient-dependent damping. Under suitable conditions on the system parameters and spatial dimension, we prove that solutions exist globally in time and…

偏微分方程分析 · 数学 2025-07-29 Tongxing Li , Silvia Frassu , Giuseppe Viglialoro

This article is accepted for publication in the "Annals I.H.P. Prob. & Stat.". We investigate the ballistic behavior of diffusions in random environment. We introduce conditions in the spirit of (T) and (T') of the discrete setting, cf.…

概率论 · 数学 2015-06-26 Tom Schmitz