Existence and global attractivity of a positive periodic solution of a class of delay differential equation |
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Authors: | Yongkun Li |
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Affiliation: | (1) Department of Mathematics, Yunnan University, 650091 Kunming, China |
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Abstract: | The existence and the global attractivity of a positive periodic solution of the delay differential equationy(t)=y(t) F[t, y](t-τ 1 (t)),⋯,y(t−τ n (t))] are studied by using some techniques of the Mawhin coincidence degree theory and the constructing suitable Liapunov functionals. When these results are applied to some special delay bio-mathematics models, some new results are obtained, and many known results are improved. Project partially supported by the National Natural Science Foundation of China (Grant No. 10572057) and the Applied Basic Research Foundation of Yunnan Province. |
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Keywords: | delay differential equation logistic equation positive periodic solution global attractivity Fredholm mapping |
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