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一类中立型捕食者ˉ食饵系统正周期解的存在性

Keywords: 捕食者ˉ食饵系统,中立型,正周期解

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Abstract:

运用严格集压缩映射的不动点定理,得到具有HollingⅡ功能性反应中立型捕食者ˉ食饵系统x′1(t)=x1(t)[r(t)-a(t)x1(t)-b(t)x1(t-τ1(t))-c(t)x′1(t-τ1(t))-τ1(t)1+mx1(t)x2(t-σ(t))],x′2(t)=x2(t)[-d(t)+β(t)x1(t-τ2(t))1+mx1(t-τ2(t))]的正周期解存在性的一个判据.

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