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Existence and global attractivity of positive periodic solutions for a delayed competitive system with the effect of toxic substances and impulses

机译:具有毒物和脉冲效应的时滞竞争系统正周期解的存在性和全局吸引性

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摘要

summary:In this paper, a class of non-autonomous delayed competitive systems with the effect of toxic substances and impulses is considered. By using the continuation theorem of coincidence degree theory, we derive a set of easily verifiable sufficient conditions that guarantees the existence of at least one positive periodic solution, and by constructing a suitable Lyapunov functional, the uniqueness and global attractivity of the positive periodic solution are established.
机译:摘要:本文研究了一类具有毒性和脉冲效应的非自治延迟竞争系统。通过使用巧合度理论的连续性定理,我们推导出了一组易于验证的充分条件,这些条件保证了至少一个正周期解的存在,并且通过构造合适的Lyapunov泛函,正周期解的唯一性和全局吸引性成为成立。

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