By the use of the Poincaré-Birkhoff fixed point theorem, we prove a multiplicity result for periodic solutions of a second order differential equation, where the nonlinearity exhibits a singularity of repulsive type at the origin and has linear growth at infinity. Our main theorem is related to previous results by Rebelo (1996, 1997) [4,5] and Rebelo and Zanolin (1996) [6,7], in connection with a problem raised by del Pino et al. (1992) [1]. © 2011 Elsevier Ltd. All rights reserved
We prove existence and multiplicity results for periodic solutions of Hamiltonian systems, by the us...
AbstractThis paper is devoted to studying the existence of single and multiple positive solutions to...
We study second-order ordinary differential equations of Newtonian type. The forcing terms under con...
By the use of the Poincaré-Birkhoff fixed point theorem, we prove a multiplicity result for periodic...
2noWe prove a multiplicity result of periodic solutions for a system of second order differential eq...
We prove multiplicity of periodic solutions for a scalar second order differential equation with an ...
Abstract Using the fixed point theorem, we study the existence and multiplicity of positive periodic...
In this paper, we study the existence of positive periodic solutions to the equation x" = f (t,...
Our aim is to prove a multiplicity result for periodic solutions of Hamiltonian systems in the plan...
We are concerned with multiplicity and bifurcation results for solutions of nonlinear second order d...
Abstract In this paper, the problem of the existence of a periodic solution is studied for the secon...
Abstract In this paper, the problem of the existence of periodic solutions is studied for the second...
AbstractThe existence and multiplicity of positive solutions are established to periodic boundary va...
This paper is devoted to study the existence of periodic solutions to the second-order differential ...
AbstractWe prove the existence of periodic solutions for the equation(1)u″+f(u)u′+g(t,u)=e(t), where...
We prove existence and multiplicity results for periodic solutions of Hamiltonian systems, by the us...
AbstractThis paper is devoted to studying the existence of single and multiple positive solutions to...
We study second-order ordinary differential equations of Newtonian type. The forcing terms under con...
By the use of the Poincaré-Birkhoff fixed point theorem, we prove a multiplicity result for periodic...
2noWe prove a multiplicity result of periodic solutions for a system of second order differential eq...
We prove multiplicity of periodic solutions for a scalar second order differential equation with an ...
Abstract Using the fixed point theorem, we study the existence and multiplicity of positive periodic...
In this paper, we study the existence of positive periodic solutions to the equation x" = f (t,...
Our aim is to prove a multiplicity result for periodic solutions of Hamiltonian systems in the plan...
We are concerned with multiplicity and bifurcation results for solutions of nonlinear second order d...
Abstract In this paper, the problem of the existence of a periodic solution is studied for the secon...
Abstract In this paper, the problem of the existence of periodic solutions is studied for the second...
AbstractThe existence and multiplicity of positive solutions are established to periodic boundary va...
This paper is devoted to study the existence of periodic solutions to the second-order differential ...
AbstractWe prove the existence of periodic solutions for the equation(1)u″+f(u)u′+g(t,u)=e(t), where...
We prove existence and multiplicity results for periodic solutions of Hamiltonian systems, by the us...
AbstractThis paper is devoted to studying the existence of single and multiple positive solutions to...
We study second-order ordinary differential equations of Newtonian type. The forcing terms under con...