幂律引力作用下从拱点抛出质点的运动轨道

用把方程的解设为余弦函数多项式的一种直接方法，求解了受幂律引力作用的质点一类非线性轨道微分方程。

Variational minimizing parabolic and hyperbolic orbits for the restricted 3-body problems Dedicated to my Teacher Professor Yang Wannian on the Occasion of his 75th Birthday

Using variational minimizing methods,we prove the existence of the odd symmetric parabolic or hyperbolic orbit for the restricted 3-body problems with weak forces.