摘要
This paper studies the existence of positive solutions for the first-order neutral delay differential equation by using some new techniques. Our results partially solve an open problem of Chuanxi and Ladas.
This paper studies the existence of positive solutions for the first-order neutral delay differential equation by using some new techniques. Our results partially solve an open problem of Chuanxi and Ladas.
基金
Project supported by the National Natural Science Foundation of China and by CNSF of China