Periodic solutions of second order nonlinear differential equations (Q1820911)
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scientific article; zbMATH DE number 3996156
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Periodic solutions of second order nonlinear differential equations |
scientific article; zbMATH DE number 3996156 |
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Periodic solutions of second order nonlinear differential equations (English)
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1986
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The authors study the existence of periodic solutions for second order nonlinear differential equations by using the alternative method for problems at resonance as well as the method of upper and lower solutions. Some previous results are improved.
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upper solutions
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second order nonlinear differential equations
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resonance
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lower solutions
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