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Periodic solutions of periodically perturbed functional differential equations |
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| Authors: | Shiwang Ma Zhicheng Wang Jianshe Yu |
| Institution: | MA Shiwang 1, WANG Zhicheng 2 and YU Jianshe 2 1. Department of Automatic Control, Huazhong University of Science and Technology, Wuhan 430074, China; 2. Department of Applied Mathematics, Hunan University, Changsha 410082, China |
| Abstract: | By using the generalized degree theory, some periodically perturbed functional differential equations have been proved to have at least one periodic solution if the associated homogeneous linear equations have no nontrivial periodic solution. Some known results are generalized. |
| Keywords: | generalized degree theory functional differential equation mixed type infinite delay periodic solution |
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