The Existence of Periodic Solutions for Non-Autonomous Differential Delay Equations via Minimax Methods
By using variational methods directly, we establish the existence of periodic solutions for a class of nonautonomous differential delay equations which are superlinear both at zero and at infinity.
Main Author: | Rong Cheng |
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Format: | Article |
Language: | English |
Published: |
SpringerOpen
2009-01-01
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Series: | Advances in Difference Equations |
Online Access: | http://dx.doi.org/10.1155/2009/137084 |
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