研究带有收获项的延迟Lotka-Volterra型区域竞争系统八个正周期解的存在性

Eight Positive Periodic Solutions of Delay Lotka-Volterra Competition Patch Systems with Harvesting Terms

通过使用叠合度理论中的Mawhin连续定理和一些微分不等式,研究带有收获项的延迟Iotka-Volterra型区域竞争系统的动态特征,从而,获得带有收获项的延迟Lotka-Volterra型区域竞争系统存在八个正周期解的充分条件.

By using Mawhin＇s continuation theorem of coincidence degree theory and dif- ferential inequality skills, we establish the existence of eight positive periodic solutions for delay Lotka-Volterra competition patch systems with harvesting terms. An example is given to show the effectiveness of the obtained results.