Positive Periodic Solution of a Periodic Cooperative Model with State Dependent Delays |
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Authors: | Maochang Qin Guihong Fan |
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Institution: | Department of Mathematics , Yunnan University , Kunming , Yunnan , 650091 , P.R. China |
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Abstract: | By using the continuation theorem of coincidence degree theory, sufficient conditions are obtained for the existence of positive periodic solution for the periodic cooperative system with state dependent delays where r i , a i , c i , i = 1, 2 are positive continuous y -periodic functions, b i , i = 1, 2 are nonnegative continuous y -periodic functions, and ij , i = 1, 2; j = 1, 2, 3 are nonnegative continuous functions and y -periodic with respect to their first argument. |
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Keywords: | Cooperative System Positive Periodic Solution State Dependent Delay |
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