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In this paper, we study the existence and stability of travelling wave solutions of a kinetic reaction-transport equation. The model describes particles moving according to a velocity-jump process, and proliferating thanks to a reaction…

偏微分方程分析 · 数学 2014-08-12 Emeric Bouin , Vincent Calvez , Grégoire Nadin

We propose a reaction-transport model for CTRW with non-linear reactions and non-exponential waiting time distributions. We derive non-linear evolution equation for mesoscopic density of particles. We apply this equation to the problem of…

统计力学 · 物理学 2015-05-14 Sergei Fedotov

This paper is concerned with the traveling wave solutions of a reaction-diffusion equation with state-dependent delay. When the birth function is monotone, the existence and nonexistence of monotone traveling wave solutions are established.…

动力系统 · 数学 2014-10-14 Guo Lin , Haiyan Wang

Motivated by the uniqueness problem for monostable semi-wavefronts, we propose a revised version of the Diekmann and Kaper theory of a nonlinear convolution equation. Our version of the Diekmann-Kaper theory allows 1) to consider new types…

经典分析与常微分方程 · 数学 2013-03-01 Maitere Aguerrea , Carlos Gomez , Sergei Trofimchuk

We propose a criterion for the existence of monotone wavefronts in non-monotone and non-local monostable diffusive equations of the Mackey-Glass type. This extends recent results by Gomez et al proved for the particular case of equations…

经典分析与常微分方程 · 数学 2016-05-06 Elena Trofimchuk , Manuel Pinto , Sergei Trofimchuk

The global existence of bounded solutions to reaction-diffusion systems with fractional diffusion in the whole space $\mathbb R^N$ is investigated. The systems are assumed to preserve the non-negativity of initial data and to dissipate…

偏微分方程分析 · 数学 2025-02-25 Phuoc-Tai Nguyen , Bao Quoc Tang

This paper is concerned with the traveling wave solutions and asymptotic spreading of delayed lattice differential equations without quasimonotonicity. The spreading speed is obtained by constructing auxiliary equations and using the theory…

动力系统 · 数学 2014-05-07 Shuxia Pan

This paper deals with front propagation dynamics of monostable equations with nonlocal dispersal in spatially periodic habitats. In the authors' earlier works, it is shown that a general spatially periodic monostable equation with nonlocal…

动力系统 · 数学 2014-12-09 Wenxian Shen , Aijun Zhang

This paper is concerned with the spatio-temporal dynamics of nonnegative bounded entire solutions of some reaction-diffusion equations in R N in any space dimension N. The solutions are assumed to be localized in the past. Under certain…

偏微分方程分析 · 数学 2020-05-18 F. Hamel , H Ninomiya

We study the asymptotic stability of traveling fronts and front's velocity selection problem for the time-delayed monostable equation $(*)$ $u_{t}(t,x) = u_{xx}(t,x) - u(t,x) + g(u(t-h,x)),\ x \in \mathbb{R},\ t >0$, considered with…

偏微分方程分析 · 数学 2016-08-18 Abraham Solar , Sergei Trofimchuk

We study the existence and uniqueness of wavefronts to the scalar reaction-diffusion equations $u_{t}(t,x) = \Delta u(t,x) - u(t,x) + g(u(t-h,x)),$ with monotone delayed reaction term $g: \R_+ \to \R_+$ and $h >0$. We are mostly interested…

偏微分方程分析 · 数学 2013-03-01 Elena Trofimchuk , Manuel Pinto , Sergei Trofimchuk

We study analytically and numerically a bistable reaction-diffusion equation on an arbitrary finite network. We prove that stable fixed points (multi-fronts) exist for any configuration as long as the diffusion is small. We also study fold…

适应与自组织系统 · 物理学 2015-06-22 J. -G. Caputo , G. Cruz-Pacheco , P. Panayotaros

This paper is concerned with front-like entire solutions for monostable reactiondiffusion systems with cooperative and non-cooperative nonlinearities. In the cooperative case, the existence and asymptotic behavior of spatially independent…

偏微分方程分析 · 数学 2015-06-05 Shi-Liang Wu , Haiyan Wang

We describe acceleration of the front propagation for solutions to a class of monostable nonlinear equations with a nonlocal diffusion in $\mathbb{R}^d$, $d\geq1$. We show that the acceleration takes place if either the diffusion kernel or…

偏微分方程分析 · 数学 2018-06-07 Dmitri Finkelshtein , Yuri Kondratiev , Pasha Tkachov

This paper deals with the existence, monotonicity, uniqueness and asymptotic behaviour of travelling wavefronts for a class of temporally delayed, spatially nonlocal diffusion equations.

动力系统 · 数学 2017-03-01 Shangjiang Guo , Johannes Zimmer

We consider a reaction-diffusion equation on a network subjected to dynamic boundary conditions, with time delayed behaviour, also allowing for multiplicative Gaussian noise perturbations. Exploiting semigroup theory, we rewrite the…

概率论 · 数学 2017-02-17 Francesco Cordoni , Luca Di Persio

Based on a recent work on traveling waves in spatially nonlocal reaction-diffusion equations, we investigate the existence of traveling fronts in reaction-diffusion equations with a memory term. We will explain how such memory terms can…

偏微分方程分析 · 数学 2021-04-27 Alexander Mielke , Sina Reichelt

Using spatial domain techniques developed by the authors and Myunghyun Oh in the context of parabolic conservation laws, we establish under a natural set of spectral stability conditions nonlinear asymptotic stability with decay at Gaussian…

偏微分方程分析 · 数学 2015-05-18 Mathew Johnson , Kevin Zumbrun

In this paper, we propose the invariant subspace approach to find exact solutions of time-fractional partial differential equations (PDEs) with time delay. An algorithmic approach of finding invariant subspaces for the generalized…

偏微分方程分析 · 数学 2020-06-26 P. Prakash , Sangita Choudhary , Varsha Daftardar-Gejji

This paper is devoted to the study of travelling fronts of reaction-diffusion equations with periodic advection in the whole plane $\mathbb R^2$. We are interested in curved fronts satisfying some "conical" conditions at infinity. We prove…

偏微分方程分析 · 数学 2014-05-21 Mohammad El Smaily , Francois Hamel , Rui Huang