A new existence theory for positive peri
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Aying Wan; Daqing Jiang; Xiaojie Xu
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Article
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2004
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Elsevier Science
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English
โ 308 KB
This paper deals with a new existence theory for positive periodic solutions to a kind of nonautonomous functional differential equation by employing the fixed-point theorem in cones. Applying the general theorems established to several biomathematieal models, the paper improves some previous result