Positive periodic solutions of infinite delay functional differential equations depending on a parameter. (Q1428187)
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scientific article; zbMATH DE number 2056336
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| English | Positive periodic solutions of infinite delay functional differential equations depending on a parameter. |
scientific article; zbMATH DE number 2056336 |
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Positive periodic solutions of infinite delay functional differential equations depending on a parameter. (English)
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14 March 2004
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The paper deals with the existence of positive periodic solutions of the system of functional-differential equations with a parameter \(x'(t) = A(t)x(t) + \lambda f(t,x_t).\) The method of upper and lower solutions is used.
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upper and lower solutions method
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positive periodic solutions
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