具有收获项的竞争-竞争-互助Lotka-Volterra系统的多重正概周期震荡

Multiplicity of positive almost periodic oscillation of a competitor-competitor-mutualist Lotka-Volterra system with harvesting terms

利用Mawhin连续定理的重合度理论和微分不等式技巧,获得竞争-竞争-互助Lotka-Volterra系统至少存在8个正概周期震荡的充分条件.

By applying the coincidence degree theory of Mawhin＇s continuation theorem and differential inequality skills, the sufficient condition for the existence of at least eight positive almost periodic oscillations was established for a competition-competition-mutualism Lotka-Volterra system with harvesting terms.