A general view on double limits in differential equations

C Kuehn, N Berglund, C Bick, M Engel, T Hurth… - Physica D: Nonlinear …, 2022 - Elsevier
In this paper, we review several results from singularly perturbed differential equations with
multiple small parameters. In addition, we develop a general conceptual framework to …

Continuation and bifurcation in nonlinear PDEs–Algorithms, applications, and experiments

H Uecker - Jahresbericht der Deutschen Mathematiker …, 2022 - Springer
Numerical continuation and bifurcation methods can be used to explore the set of steady
and time–periodic solutions of parameter dependent nonlinear ODEs or PDEs. For PDEs, a …

Fractional wave models and their experimental applications

BA Malomed - Fractional Dispersive Models and Applications: Recent …, 2024 - Springer
A focused summary of one-and two-dimensional models for linear and nonlinear wave
propagation in fractional media is given. The basic models, which represent fractional …

Cross-diffusion induced instability on networks

C Kuehn, C Soresina - Journal of Complex Networks, 2024 - academic.oup.com
The concept of Turing instability, namely that diffusion can destabilize the homogenous
steady state, is well known either in the context of partial differential equations (PDEs) or in …

[HTML][HTML] Coexistence-segregation dichotomy in the full cross-diffusion limit of the stationary SKT model

J Inoue, K Kuto, H Sato - Journal of Differential Equations, 2023 - Elsevier
This paper studies the Lotka-Volterra competition model with cross-diffusion terms under
homogeneous Dirichlet boundary conditions. We consider the asymptotic behavior of …

[HTML][HTML] Numerical continuation for fractional PDEs: sharp teeth and bloated snakes

N Ehstand, C Kuehn, C Soresina - Communications in Nonlinear Science …, 2021 - Elsevier
Partial differential equations (PDEs) involving fractional Laplace operators have been
increasingly used to model non-local diffusion processes and are actively investigated using …

Hopf bifurcations in the full SKT model and where to find them

C Soresina - arXiv preprint arXiv:2202.04168, 2022 - arxiv.org
In this paper, we consider the Shigesada-Kawasaki-Teramoto (SKT) model, which presents
cross-diffusion terms describing competition pressure effects. Even though the reaction part …

Numerical continuation for a fast-reaction system and its cross-diffusion limit

C Kuehn, C Soresina - SN Partial Differential Equations and Applications, 2020 - Springer
In this paper we investigate the bifurcation structure of the cross-diffusion Shigesada–
Kawasaki–Teramoto model (SKT) in the triangular form and in the weak competition regime …

Evolution of dietary diversity and a starvation driven cross-diffusion system as its singular limit

E Brocchieri, L Corrias, H Dietert, YJ Kim - Journal of Mathematical Biology, 2021 - Springer
We rigorously prove the passage from a Lotka-Volterra reaction-diffusion system towards a
cross-diffusion system at the fast reaction limit. The system models a competition of two …

Computer-assisted proofs for some nonlinear diffusion problems

M Breden - Communications in Nonlinear Science and Numerical …, 2022 - Elsevier
In the last three decades, powerful computer-assisted techniques have been developed in
order to validate a posteriori numerical solutions of semilinear elliptic problems of the form Δ …