Propagation and reaction–diffusion models with free boundaries

Y Du - Bulletin of Mathematical Sciences, 2022 - World Scientific
In this short survey, we describe some recent developments on the modeling of propagation
by reaction-differential equations with free boundaries, which involve local as well as …

Reaction-diffusion models of biological invasion: Open source computational tools, key concepts and analysis

MJ Simpson, SW McCue - arXiv preprint arXiv:2403.01667, 2024 - arxiv.org
This review provides open-access computational tools that support a range of mathematical
approaches to analyse three related scalar reaction-diffusion models used to study …

Exact sharp-fronted travelling wave solutions of the Fisher–KPP equation

SW McCue, M El-Hachem, MJ Simpson - Applied Mathematics Letters, 2021 - Elsevier
A family of travelling wave solutions to the Fisher–KPP equation with speeds c=±5∕ 6 can
be expressed exactly using Weierstra ß elliptic functions. The well-known solution for c= 5∕ …

[HTML][HTML] Survival, extinction, and interface stability in a two-phase moving boundary model of biological invasion

MJ Simpson, N Rahman, SW McCue… - Physica D: Nonlinear …, 2023 - Elsevier
We consider a moving boundary mathematical model of biological invasion. The model
describes the spatiotemporal evolution of two adjacent populations: each population …

Travelling wave analysis of cellular invasion into surrounding tissues

M El-Hachem, SW McCue, MJ Simpson - Physica D: Nonlinear Phenomena, 2021 - Elsevier
Single-species reaction–diffusion equations, such as the Fisher–KPP and Porous-Fisher
equations, support travelling wave solutions that are often interpreted as simple …

Invading and receding sharp-fronted travelling waves

M El-Hachem, SW McCue, MJ Simpson - Bulletin of Mathematical Biology, 2021 - Springer
Biological invasion, whereby populations of motile and proliferative individuals lead to
moving fronts that invade vacant regions, is routinely studied using partial differential …

[HTML][HTML] Shock-fronted travelling waves in a reaction–diffusion model with nonlinear forward–backward–forward diffusion

Y Li, P van Heijster, MJ Simpson… - Physica D: Nonlinear …, 2021 - Elsevier
Reaction–diffusion equations (RDEs) are often derived as continuum limits of lattice-based
discrete models. Recently, a discrete model which allows the rates of movement …

Mechanical cell competition in heterogeneous epithelial tissues

RJ Murphy, PR Buenzli, RE Baker… - Bulletin of Mathematical …, 2020 - Springer
Mechanical cell competition is important during tissue development, cancer invasion, and
tissue ageing. Heterogeneity plays a key role in practical applications since cancer cells can …

Pattern formation and front stability for a moving-boundary model of biological invasion and recession

AKY Tam, MJ Simpson - Physica D: Nonlinear Phenomena, 2023 - Elsevier
We investigate pattern formation in a two-dimensional (2D) Fisher–Stefan model, which
involves solving the Fisher–KPP equation on a compactly-supported region with a moving …

A unified analytical approach to fixed and moving boundary problems for the heat equation

MR Rodrigo, N Thamwattana - Mathematics, 2021 - mdpi.com
Fixed and moving boundary problems for the one-dimensional heat equation are
considered. A unified approach to solving such problems is proposed by embedding a given …