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Related papers: Pattern formation in the doubly-nonlocal Fisher-KP…

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We develop a detailed rigorous analysis of edge bifurcations of standing waves in the nonlinear Schr\"odinger (NLS) equation on a tadpole graph (a ring attached to a semi-infinite line subject to the Kirchhoff boundary conditions at the…

Mathematical Physics · Physics 2014-12-30 Diego Noja , Dmitry Pelinovsky , Gaukhar Shaikhova

We investigate the asymptotic speed of spread of the solutions of a non-autonomous Fisher-KPP equation with nonlocal diffusion, driven by a thin-tailed kernel. In this paper, we are concerned with both compactly supported and exponentially…

Analysis of PDEs · Mathematics 2023-08-04 Arnaud Ducrot , Zhucheng Jin

We analyze, mainly using bifurcation methods, an elliptic superlinear problem in one-dimension with periodic boundary conditions. One of the main novelties is that we follow for the first time a bifurcation approach, relying on a…

Classical Analysis and ODEs · Mathematics 2025-04-15 Eduardo Muñoz-Hernández , Juan Carlos Sampedro , Andrea Tellini

In Cao, Du, Li and Li [8], a nonlocal diffusion model with free boundaries extending the local diffusion model of Du and Lin [12] was introduced and studied. For Fisher-KPP type nonlinearities, its long-time dynamical behaviour is shown to…

Analysis of PDEs · Mathematics 2020-01-28 Yihong Du , Fang Li , Maolin Zhou

Nonlocal interactions are ubiquitous in nature and play a central role in many biological systems. In this paper, we perform a bifurcation analysis of a widely-applicable advection-diffusion model with nonlocal advection terms describing…

Analysis of PDEs · Mathematics 2023-05-25 Valeria Giunta , Thomas Hillen , Mark A. Lewis , Jonathan R. Potts

This paper presents a general framework to derive the weakly nonlinear stability near a Hopf bifurcation in a special class of multi-scale reaction-diffusion equations. The main focus is on how the linearity and nonlinearity of the fast…

Dynamical Systems · Mathematics 2024-07-09 Ji Li , Qing Yu , Qian Zhang

Our investigation focuses on the asymptotic spreading behavior of the Fisher-KPP equation with a mixed local-nonlocal operator in the diffusion (see the work by X. Cabr\'e and J.-M. Roquejoffre, 2013, ref.[8]) to the setting of mixed…

Analysis of PDEs · Mathematics 2025-09-01 Begoña Barrios , Bryan Pichucho , Alexander Quaas

In three dimensions, the parabolic-elliptic Keller-Segel system exhibits a rich variety of singularity formations. Notably, it admits an explicit self-similar blow-up solution whose radial stability, conjectured more than two decades ago in…

Analysis of PDEs · Mathematics 2025-04-01 Zexing Li , Tao Zhou

We provide an asymptotic analysis of a non-local Fisher-KPP type equation in periodic media and with a non-local stable operator of order $\alpha$ $\in$ (0, 2). We perform a long time-long range scaling in order to prove that the stable…

Analysis of PDEs · Mathematics 2018-12-14 Alexis Léculier

Using a nonlocal second-order traffic flow model we present an approach to control the dynamics towards a steady state. The system is controlled by the leading vehicle driving at a prescribed velocity and also determines the steady state.…

Optimization and Control · Mathematics 2023-03-13 Jan Friedrich , Simone Göttlich , Michael Herty

This paper is concerned with non-cooperative parabolic reaction--diffusion systems which share structural similarities with the scalar Fisher--KPP equation. These similarities make it possible to prove, among other results, an extinction…

Analysis of PDEs · Mathematics 2017-08-17 Léo Girardin

In the second part of this series of papers, we address the same Cauchy problem that was considered in part 1, namely the nonlocal Fisher-KPP equation in one spatial dimension, \[ u_t = D u_{xx} + u(1-\phi*u), \] where $\phi*u$ is a spatial…

Analysis of PDEs · Mathematics 2023-06-07 D. J. Needham , J. Billingham

The paper deals with second order parabolic equations on bounded domains with Dirichlet conditions in arbitrary Euclidean spaces. Their interest comes from being models for describing reaction-diffusion processes in several frameworks. A…

Analysis of PDEs · Mathematics 2018-09-10 Irene Benedetti , Luisa Malaguti , Valentina Taddei

The paper is devoted to a reaction-diffusion equation with doubly nonlocal nonlinearity arising in various applications in population dynamics. One of the integral terms corresponds to the nonlocal consumption of resources while another one…

Pattern Formation and Solitons · Physics 2016-01-19 M. Banerjee , V. Vougalter , V. Volpert

We consider several different bidirectional Whitham equations that have recently appeared in the literature. Each of these models combine the full two-way dispersion relation from the incompressible Euler equations with a canonical shallow…

Analysis of PDEs · Mathematics 2018-04-11 Kyle M. Claassen , Mathew A. Johnson

The nonlinear Schrodinger (NLS) equation is considered on a periodic metric graph subject to the Kirchhoff boundary conditions. Bifurcations of standing localized waves for frequencies lying below the bottom of the linear spectrum of the…

Dynamical Systems · Mathematics 2018-03-28 Dmitry E. Pelinovsky , Guido Schneider

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…

Analysis of PDEs · Mathematics 2019-01-14 Alessandro Audrito

The diffusive Holling-Tanner predator-prey model with no-flux boundary conditions and nonlocal prey competition is considered in this paper. We show the existence of spatial nonhomogeneous periodic solutions, which is induced by nonlocal…

Dynamical Systems · Mathematics 2019-05-22 Shanshan Chen , Junjie Wei , Kaiqi Yang

We study a two-fluid description of high and low temperature components of the electron velocity distribution of an idealized tokamak plasma. We refine previous results on the laminar steady-state solution. On the one hand, we prove global…

Analysis of PDEs · Mathematics 2013-03-08 D. Zhelyazov , D. Han-Kwan , J. D. M. Rademacher

We consider a class of nonlocal viscous Cahn-Hilliard equations with Neumann boundary conditions for the chemical potential. The double-well potential is allowed to be singular (e.g. of logarithmic type), while the singularity of the…

Analysis of PDEs · Mathematics 2021-01-19 Elisa Davoli , Luca Scarpa , Lara Trussardi