Efficient numerical computation of the basic reproduction number for structured populations

D Breda, F Florian, J Ripoll, R Vermiglio - Journal of computational and …, 2021 - Elsevier
As widely known, the basic reproduction number plays a key role in weighing birth/infection
and death/recovery processes in several models of population dynamics. In this general …

Collocation of next-generation operators for computing the basic reproduction number of structured populations

D Breda, T Kuniya, J Ripoll, R Vermiglio - Journal of scientific computing, 2020 - Springer
We contribute a full analysis of theoretical and numerical aspects of the collocation
approach recently proposed by some of the authors to compute the basic reproduction …

On the convergence of the pseudospectral approximation of reproduction numbers for age-structured models

S De Reggi, F Scarabel, R Vermiglio - arXiv preprint arXiv:2409.01520, 2024 - arxiv.org
We rigorously investigate the convergence of a new numerical method, recently proposed
by the authors, to approximate the reproduction numbers of a large class of age-structured …

Numerical bifurcation analysis of renewal equations via pseudospectral approximation

F Scarabel, O Diekmann, R Vermiglio - Journal of Computational and …, 2021 - Elsevier
We propose an approximation of nonlinear renewal equations by means of ordinary
differential equations. We consider the integrated state, which is absolutely continuous and …

Equations with infinite delay: pseudospectral discretization for numerical stability and bifurcation in an abstract framework

F Scarabel, R Vermiglio - SIAM Journal on Numerical Analysis, 2024 - SIAM
We consider nonlinear delay differential and renewal equations with infinite delay. We
extend the work of Gyllenberg et al.[Appl. Math. Comput., 333 (2018), pp. 490–505] by …

Distributed delay differential equation representations of cyclic differential equations

T Cassidy - SIAM Journal on Applied Mathematics, 2021 - SIAM
Compartmental ordinary differential equation (ODE) models are used extensively in
mathematical biology. When transit between compartments occurs at a constant rate, the …

A numerical method for the stability analysis of linear age-structured models with nonlocal diffusion

D Breda, S De Reggi, R Vermiglio - SIAM Journal on Scientific Computing, 2024 - SIAM
We numerically address the stability analysis of linear age-structured population models
with nonlocal diffusion, which arise naturally in describing dynamics of infectious diseases …

Pseudospectral approximation of Hopf bifurcation for delay differential equations

BAJ de Wolff, F Scarabel, SM Verduyn Lunel… - SIAM Journal on Applied …, 2021 - SIAM
Pseudospectral approximation reduces delay differential equations (DDE) to ordinary
differential equations (ODE). Next one can use ODE tools to perform a numerical bifurcation …

Numerical bifurcation analysis of physiologically structured population models via pseudospectral approximation

F Scarabel, D Breda, O Diekmann… - Vietnam Journal of …, 2021 - Springer
Physiologically structured population models are typically formulated as a partial differential
equation of transport type for the density, with a boundary condition describing the birth of …

A pseudospectral method for investigating the stability of linear population models with two physiological structures

A Andò, S De Reggi, D Liessi, F Scarabel - arXiv preprint arXiv …, 2022 - arxiv.org
The asymptotic stability of the null equilibrium of a linear population model with two
physiological structures formulated as a first-order hyperbolic PDE is determined by the …