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This paper is devoted to reaction-diffusion equations with bistable nonlinearities depending periodically on time. These equations admit two linearly stable states. However, the reaction terms may not be bistable at every time. These may…

偏微分方程分析 · 数学 2015-07-23 Benjamin Contri

This paper is concerned with the existence and qualitative properties of pulsating fronts for spatially periodic reaction-diffusion equations with bistable nonlinearities. We focus especially on the influence of the spatial period and,…

偏微分方程分析 · 数学 2014-08-05 Weiwei Ding , Francois Hamel , Xiao-Qiang Zhao

We describe the accelerated propagation wave arising from a non-local reaction-diffusion equation. This equation originates from an ecological problem, where accelerated biological invasions have been documented. The analysis is based on…

偏微分方程分析 · 数学 2015-12-08 Nathanaël Berestycki , Clément Mouhot , Gaël Raoul

We are concerned with travelling wave solutions arising in a reaction diffusion equation with bistable and nonlocal nonlinearity, for which the comparison principle does not hold. Stability of the equilibrium $u\equiv 1$ is not assumed. We…

偏微分方程分析 · 数学 2013-03-15 Matthieu Alfaro , Jerome Coville , Gael Raoul

We consider a system of two reaction-diffusion-advection equations describing the one dimensional directed motion of particles with superimposed diffusion and mutual alignment. For this system we show the existence of traveling wave…

偏微分方程分析 · 数学 2021-01-19 Heinrich Freistühler , Jan Fuhrmann

The current paper is devoted to the investigation of wave propagation phenomenon in reaction-diffusion equations with ignition type nonlinearity in time heterogeneous and random media. It is proven that such equations in time heterogeneous…

偏微分方程分析 · 数学 2015-12-22 Wenxian Shen , Zhongwei Shen

We study existence and uniqueness of travelling fronts, and asymptotic speed of propagation for a non local reaction diffusion equation with spatial and genetic trait structure.

偏微分方程分析 · 数学 2014-12-23 Henri Berestycki , Tianling Jin , Luis Silvestre

We prove existence, uniqueness, and stability of transition fronts (generalized traveling waves) for reaction-diffusion equations in cylindrical domains with general inhomogeneous ignition reactions. We also show uniform convergence of…

偏微分方程分析 · 数学 2009-01-19 Andrej Zlatos

Reaction-diffusion equations appear in biology and chemistry, and combine linear diffusion with different kind of reaction terms. Some of them are remarkable from the mathematical point of view, since they admit families of travelling waves…

偏微分方程分析 · 数学 2019-01-14 Alessandro Audrito

We devote this paper to the issue of existence of pulsating travelling front solutions for spatially periodic heterogeneous reaction-diffusion equations in arbitrary dimension, in both bistable and more general multistable frameworks. In…

偏微分方程分析 · 数学 2019-01-23 Thomas Giletti , Luca Rossi

This paper is concerned with the spatial propagation of nonlocal dispersal equations with bistable or multistable nonlinearity in exterior domains. We obtain the existence and uniqueness of an entire solution which behaves like a planar…

偏微分方程分析 · 数学 2020-05-05 Shao-Xia Qiao , Wan-Tong Li , Jian-Wen Sun

This article investigates a mathematical model for bushfire propagation, focusing on the existence and properties of translating solutions. We obtain quantitative bounds on the environmental diffusion coefficient and ignition kernels,…

偏微分方程分析 · 数学 2025-05-01 Serena Dipierro , Enrico Valdinoci , Glen Wheeler , Valentina-Mira Wheeler

We study the evolution of fronts in a bistable reaction-diffusion system when the nonlinear reaction term is spatially non-homogeneous. This equation has been used to model wave propagation in various biological systems. Extending previous…

斑图形成与孤子 · 物理学 2009-10-31 Horacio G. Rotstein , Anatol M. Zhabotinsky , Irving R. Epstein

We study multiplicity of the supercritical traveling front solutions for scalar reaction-diffusion equations in infinite cylinders which invade a linearly unstable equilibrium. These equations are known to possess traveling wave solutions…

偏微分方程分析 · 数学 2013-09-24 P. V. Gordon , C. B. Muratov , M. Novaga

We consider traveling fronts to the nonlocal bistable equation. We do not assume that the Borel-measure is absolutely continuous with respect to the Lebesgue measure. We show that there is a traveling wave solution with monotone profile. In…

偏微分方程分析 · 数学 2008-10-21 Hiroki Yagisita

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 one-dimensional reaction-diffusion equations for a large class of spatially periodic nonlinearities (including multistable ones) and study the asymptotic behavior of solutions with Heaviside type initial data. Our analysis…

偏微分方程分析 · 数学 2012-03-29 Arnaud Ducrot , Thomas Giletti , Hiroshi Matano

We consider a single component reaction-diffusion equation in one dimension with bistable nonlinearity and a nonlocal space-fractional diffusion operator of Riesz-Feller type. Our main result shows the existence, uniqueness (up to…

偏微分方程分析 · 数学 2023-08-21 Franz Achleitner , Christian Kuehn

In this paper we study the invasion fronts of spatially periodic monotone reaction-diffusion systems in a multi-dimensional setting. We study the pulsating traveling waves that connect the trivial equilibrium, for which all components of…

偏微分方程分析 · 数学 2025-11-14 Liangliang Deng , Arnaud Ducrot , Quentin Griette

The aim of this paper is to study the generalized Fisher-KPP equation with nonlocal diffusion. In specific we prove the existence of a critical speed so that traveling front type solutions exist up to this critical speed and non-existence…

偏微分方程分析 · 数学 2021-04-28 José Fuentealba , Alexander Quaas
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