1College of Mathematics and Econometrics, Hunan University, Changsha, Hunan 410082, China.
2Department of Mathematics, Changsha University Of Science And Technology, Changsha, Hunan 410076, China, Currtent addres: College of Mathematics and Econometrics, Hunan University, Changsha, Hunan 410082, China, Email: junwmath@hotmail.com
(Communicated by Martin Bohner)
In this paper, by the wellknown Deimling fixed point theorem in a cone, we con sider the following nonlinear functional differential system with feedback control where λ is a positive parameter. We obtain the results on the existence and multi plicity of positive periodic solutions.
Positive periodic solutions, Functional differential system, Fixed point theorem, Fixed point index, Feedback control
