Stability analysis of age-structured population equations by pseudospectral differencing methods.
In this paper a numerical scheme to investigate the stability of linear models of age-structured population dynamics is studied. The method is based on the discretization of the infinitesimal generator associated to the semigroup of the solution operator by using pseudospectral differencing techniques, hence following the approach recently proposed in Breda et al. [SIAM J Sci Comput 27(2): 482-495, 2005] for delay differential equations. The method computes the rightmost characteristic roots and it is shown to converge with spectral accuracy behavior.
Breda
Dimitri
D
Dipartimento di Matematica e Informatica, Università degli Studi di Udine, via delle Scienze 208, 33100 Udine, Italy. dbreda@dimi.uniud.it
Cusulin
Caterina
C
Iannelli
Mimmo
M
Maset
Stefano
S
Vermiglio
Rossana
R
D000367:Age Factors; D006801:Humans; D016014:Linear Models; D008954:Models, Biological; D009716:Numerical Analysis, Computer-Assisted; D011157:Population Dynamics