4 papers
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…
On exact multiplicity for a second order equation with radiation boundary conditions
Pablo Amster, Mariel P. Kuna
A second order ordinary differential equation with a superlinear term under radiation boundary conditions is studied. Using a shooting argument, all the results obtained i…
Multiple solutions for periodic perturbations of a delayed autonomous system near an equilibrium
Pablo Amster, Mariel P. Kuna, Gonzalo Robledo
Small non-autonomous perturbations around an equilibrium of a nonlinear delayed system are studied. Under appropriate assumptions, it is shown that the number of -periodic solut…