利用临界点理论研究二阶哈密顿系统同宿轨的存在性。在具有线性增长非线性项时,得到了无穷多同宿轨存在性的充分条件。
By using critical point theory, the existence of homoclinic orbits for second order Hamiltonian system is studied in the cases when the nonlinearity grows linearly. Some sufficient conditions for existence of infinite homoclinic orbits are obtained.