Electronic Journal of Differential Equations (Jun 2013)
Multiplicity of homoclinic solutions for second-order Hamiltonian systems
Abstract
By using a modified function technique and variational methods, we establish the existence of infinitely many homoclinic solutions for a second-order Hamiltonian system $ddot{u}-L(t)u+F_u(t,u)=0$, for all t in R, where no coercive condition for F(t,u) at infinity is imposed.