摘要
For the equations dx/dt=h(y)-f(x), dy/dt=-g(x)there are some results about the existence of limiting cycle under the monotone condition provided on h(y). In this paper, the same result without the monotone assumption is proved.
For the equations dx/dt=h(y)-f(x), dy/dt=-g(x)there are some results about the existence of limiting cycle under the monotone condition provided on h(y). In this paper, the same result without the monotone assumption is proved.
出处
《北京师范大学学报（自然科学版）》
CAS
1983年第4期1-4,共4页
Journal of Beijing Normal University(Natural Science)
