研究具有HollingⅡ型功能性反应的两食饵-捕食者离散模型的概周期解,得到系统永久持续生存的充分条件.通过构造适当的李雅普诺夫函数,得到保证系统存在唯一全局吸引的概周期解的充分条件.
An almost periodic discrete two - prey one - predator model with Holling type Ⅱ func - tional response is studied. By using two themes of difference equations and constructing a suitable Lyapunov function, sufficient conditions are derived for the existence of an unique almost periodic solution of the system.