【摘要】 研究了一类三次Kolmogorov捕食者-食饵种群差分系统正周期解的存在性,利用重合度理论中的连续性定理建立了存在正周期解的充分性依据,推广并改进了文献中的相关结果.更多还原

【Abstract】 This paper studies the existence of positive solution for a Cubic Kolmogorov predator-prey difference system.The sufficient conditions of existence of positive periodic solution for the system is obtained by means of continuation theorem of coincidence degree.The paper generalizes and improves the result in the literature.更多还原