Existence And Nonexistence Of Positive Periodic Solution For Impulsive Nicholson'S Blowflies Model With Both Delay And Harvesting Term
In this paper, impulsive Nicholson's blowflies with both delay and harvesting terrm is studied. By using Leray-Schauder fixed point theorem, we obtain some sufficient conditions for the existence of positive periodic solutions. In addition, the nonexistence of positive periodic solution is also investigated. Our results extend and improve the previous literatures.