4 papers · 1 filter
On the Solvability of the Periodically Forced Relativistic Pendulum Equation on Time Scales
Pablo Amster, Mariel P. Kuna, Dionicio D. Santos
We study some properties of the range of the relativistic pendulum operator , that is, the set of possible continuous -periodic forcing terms for which the equat…
Multiplicity of Periodic Solutions for Dynamic Liénard Equations with Delay and Singular -laplacian of Relativistic Type
Pablo Amster, Mariel P. Kuna, Dionicio D. Santos
We study the existence and multiplicity of periodic solutions for singular -laplacian equations with delay on time scales. We prove the existence of multiple solutions using top…
Periodic solutions for a nonautonomous mathematical model of hematopoietic stem cell dynamics
Mostafa Adimy, Pablo Amster, Julián Epstein
The main purpose of this paper is to study the existence of periodic solutions for a nonautonomous differential-difference system describing the dynamics of hematopoietic stem cell…
Stability of Hahnfeldt Angiogenesis Models with Time Lags
P. Amster, L. Berezansky, L. Idels
Mathematical models of angiogenesis, pioneered by P. Hahnfeldt, are under study. To enrich the dynamics of three models, we introduced biologically motivated time-varying delays. A…