具时滞的两个同种群非自治竞争系统的周期正解

摘要

应用重合度论中的延拓定理,获得了具时滞的两个同种群非自治竞争系统的周期正解存在的充分条件.%By using the continuation theorem of coincidence degree theory, sufficient conditions are obtained for the existence of a positive periodic solution to a two-identical species nonautonomous competition system with time delay.