摘要
In this paper, a sufficient condition for the periodic solution with prescribed period for a class of superquadratic second order Hamiltonian systems x¨+Ax+ Δ F(x)=0 is obtained by using the critical point theory, where A≠0 and is an n×n real symmetric matrix and is non definite.
In this paper, a sufficient condition for the periodic solution with prescribed period for a class of superquadratic second order Hamiltonian systems x¨+Ax+ Δ F(x)=0 is obtained by using the critical point theory, where A≠0 and is an n×n real symmetric matrix and is non definite.