数学物理学报(英文版) ›› 1998, Vol. 18 ›› Issue (1): 113-120.
• 论文 • 上一篇
黄立宏1, 陈明博2
Huang Lihong1, Chen Mingpo2
摘要: In this paper, author obtain sufficient conditions for the boundedness of solutions and the existence of limit cycles of the nonlinear differential system
dx/dt=p(y),dy/dt=-q(y)h(x,y)-g(x) without the traditional assumptions "h(x, y) ≥ 0 for|x|sufficiently large" and "∫0±∞ g (x)dx=+∞".