The mathematical concept of “Lyapunov time” is essentially the span in which it is possible to predict the state of a chaotic system. Though incomputable for human events, the idea of a forecasted ...
In this paper, we develop stability criteria in terms of two measures for perturbed setvalued delay integro-differential equations with fixed moments of impulsive effects. Variational Lyapunov method ...
SIAM Journal on Applied Mathematics, Vol. 72, No. 1 (2012), pp. 25-38 (14 pages) We study the basic age-structured population model describing the HIV infection process, which is defined by PDEs. The ...