数学研究
數學研究
수학연구
JOURNAL OF MATHEMATICAL STUDY
2011年
3期
234-242
,共9页
存在性%不动点%正的周期解%锥
存在性%不動點%正的週期解%錐
존재성%불동점%정적주기해%추
Existence%fixed point%positive periodic solutions%cone
本文是关于一阶时滞微分方程多重周期正解的存在性问题的研究，利用Leggett—Williams不动点定理和Guo—Krasnosel’skii锥拉伸锥压缩不动点定理，得到了一些新的结论。
本文是關于一階時滯微分方程多重週期正解的存在性問題的研究，利用Leggett—Williams不動點定理和Guo—Krasnosel’skii錐拉伸錐壓縮不動點定理，得到瞭一些新的結論。
본문시관우일계시체미분방정다중주기정해적존재성문제적연구，이용Leggett—Williams불동점정리화Guo—Krasnosel’skii추랍신추압축불동점정리，득도료일사신적결론。
This paper is concerned with the periodic positive solutions of the first order functional differential equations with periodic delays. Some new existence results are obtained by using the Leggett-Williams fixed point theorem and Guo-Krasnosel＇skii fixed point theorem of cone expansioncompression.
