摘要
本文证明了广义Lienard方程极限环的一个惟一性定理,并用它证明了具有 稀疏效应的捕食-食饵系统在其正奇点外围至多有一个极限环.
In this paper, a theorem on the uniqueness of limit cycle of the general Lienard equation is proved. Applying the theorem to the predator-prey model with undercrowding effect, it is proved that the predator-prey system has at most one limit cycle around the positive weak singular point.
出处
《数学学报（中文版）》
SCIE
CSCD
北大核心
2004年第6期1193-1200,共8页
Acta Mathematica Sinica：Chinese Series
