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The existence of travelling waves for a model of concentration waves of bacteria is investigated. The model consists in a kinetic equation for the biased motion of cells following a run-and-tumble process, coupled with two…

偏微分方程分析 · 数学 2016-07-05 Vincent Calvez

This paper is devoted to the study of existence, uniqueness, stability, and monotonicity of traveling wave solutions to the following parabolic-elliptic chemotaxis system with logistic type source…

偏微分方程分析 · 数学 2026-05-07 Wenxian Shen

This paper concerns wave propagation in a class of scalar reaction-diffusion-convection equations with $p$-Laplacian-type diffusion and monostable reaction. We introduce a new concept of a non-smooth traveling wave profile, which allows us…

偏微分方程分析 · 数学 2026-01-21 Pavel Drábek , Soyeun Jung , Eunkyung Ko , Michaela Zahradníková

This paper is concerned with traveling wave solutions for a chemotaxis model with degenerate diffusion of porous medium type. We establish the existence of semi-finite traveling waves, including the sharp type and $C^1$ type semi-finite…

偏微分方程分析 · 数学 2020-05-12 Shanming Ji , Zhian Wang , Tianyuan Xu , Jingxue Yin

The existence of travelling waves for a coupled system of hyperbolic/ parabolic equations is established in the case of a finite number of velocities in the kinetic equation. This finds application in collective motion of chemotactic…

偏微分方程分析 · 数学 2018-11-20 Vincent Calvez , Laurent Gosse , Monika Twarogowska

Hybrid models of chemotaxis combine agent-based models of cells with partial differential equation models of extracellular chemical signals. In this paper, travelling wave properties of hybrid models of bacterial chemotaxis are…

生物物理 · 物理学 2013-02-13 Benjamin Franz , Chuan Xue , Kevin J. Painter , Radek Erban

This paper is concerned with a lattice dynamical system modeling the evolution of susceptible and infective individuals at discrete niches. We prove the existence of traveling waves connecting the disease-free state to non-trivial leftover…

偏微分方程分析 · 数学 2017-05-24 Yan-Yu Chen , Jong-Shenq Guo , Francois Hamel

We consider the Keller-Segel model for chemotaxis with a nonlinear diffusion coefficent and a singular sensitivity function. We show the existence of travelling waves for wave speeds above a critical value, and establish local…

偏微分方程分析 · 数学 2012-02-20 Martin Meyries

We prove existence and uniqueness of travelling waves for a reaction-diffusion system coupling a classical reaction-diffusion equation in a strip with a diffusion equation on a line. To do this we use a continuation method which leads to…

偏微分方程分析 · 数学 2014-10-20 Laurent Dietrich

We provide a mathematical analysis of a thermo-diffusive combustion model of lean spray flames, for which we prove the existence of travelling waves. In the high activation energy singular limit we show the existence of two distinct…

经典分析与常微分方程 · 数学 2017-03-06 Pierre Berthonnaud , Komla Domelevo

We consider a free boundary model of epithelial cell migration with logistic growth and nonlinear diffusion induced by mechanical interactions. Using numerical simulations, phase plane and perturbation analysis, we find and analyse…

斑图形成与孤子 · 物理学 2020-10-05 Ryan J Murphy , Pascal R Buenzli , Ruth E Baker , Matthew J Simpson

In this work, we first prove a stability theorem for traveling waves in a class of non-cooperative reaction-diffusion systems with nonlocal dispersal of equal diffusivities. Our stability criterion is in the sense that the initial…

偏微分方程分析 · 数学 2024-05-08 Jong-Shenq Guo , Masahiko Shimojo

In this paper, we consider two species chemotaxis systems with Lotka-Volterra competition reaction terms. Under appropriate conditions on the parameters in such a system, we establish the existence of traveling wave solutions of the system…

偏微分方程分析 · 数学 2020-10-23 T. B. Issa , R. B Salako , W. Shen

We analyze travelling wave (TW) solutions for nonlinear systems consisting of an ODE coupled to a degenerate PDE with a diffusion coefficient that vanishes as the solution tends to zero and blows up as it approaches its maximum value.…

偏微分方程分析 · 数学 2022-02-17 Koondanibha Mitra , Jack M. Hughes , Stefanie Sonner , Hermann J. Eberl , Jack D. Dockery

We study a version of the Keller-Segel model for bacterial chemotaxis, for which exact travelling wave solutions are explicitly known in the zero attractant diffusion limit. Using geometric singular perturbation theory, we construct…

动力系统 · 数学 2014-03-12 Kristen Harley , Peter van Heijster , Graeme Pettet

This paper concerns the existence and properties of traveling wave solutions to reaction-diffusion-convection equations on the real line. We consider a general diffusion term involving the $p$-Laplacian and combustion-type reaction term. We…

偏微分方程分析 · 数学 2024-06-26 Pavel Drábek , Michaela Zahradníková

This paper focuses on traveling wave solutions for the so-called Rosenzweig-MacArthur model with spatial diffusion. The main results of this note are concerned with the existence and uniqueness of traveling wave solution as well as periodic…

偏微分方程分析 · 数学 2019-10-25 Arnaud Ducrot , Zhihua Liu , Pierre Magal

We consider shear wave propagation in soft viscoelastic solids of rate type. Based on objective stress rates, the constitutive model accounts for finite strain, incompressibility, as well as stress- and strain-rate viscoelasticity. The…

软凝聚态物质 · 物理学 2023-09-25 Harold Berjamin , Michel Destrade , Giuseppe Saccomandi

In this work, we study the nonlinear traveling waves in density stratified fluids with depth varying shear currents. Beginning the formulation of the water-wave problem due to [1], we extend the work of [4] and [18] to examine the interface…

流体动力学 · 物理学 2017-08-30 K. L. Oliveras , C. W. Curtis

We use a geometric approach to prove the existence of smooth travelling wave solutions of a nonlinear diffusion-reaction equation with logistic kinetics and a convex nonlinear diffusivity function which changes sign twice in our domain of…

偏微分方程分析 · 数学 2020-09-17 Yifei Li , Peter van Heijster , Robert Marangell , Matthew J. Simpson
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