We discuss two types of second-order neutral functional differential equations with mixed delay in this paper. By applying Krasnoselskii’s fixed-point theorem, some results about the existence of positive periodic so...We discuss two types of second-order neutral functional differential equations with mixed delay in this paper. By applying Krasnoselskii’s fixed-point theorem, some results about the existence of positive periodic solution to the systems are obtained, which complement the previous known results.展开更多
基金sponsored by the National Natural Science Foundation of China (10771001)the NSF of Education Bureau of Anhui Province (KJ2009A005Z+2 种基金 KJ2010ZD02 2010SQRL159)the NSF of Anhui Province (090416237)
文摘We discuss two types of second-order neutral functional differential equations with mixed delay in this paper. By applying Krasnoselskii’s fixed-point theorem, some results about the existence of positive periodic solution to the systems are obtained, which complement the previous known results.
