Periodic Boundary Value Problems for the First Order Impulsive Functional Differential Equations

• 作 者: WeiDING;
• 机 构: Department of Mathematics, Shanghai Jiaotong University, Shanghai, 200240,China
• 出 处: the 2nd Shanghai International Symposium on NOnlinear Scienc
• 发表日期: 2005年期

　　This paper is concerned with the existence of extreme solutions of the periodic boundary value problems for a class of first order functional differential equations.We introduce new concept of lower and upper solutions and present that the method of lower and upper solutions coupled with monotone iterative technique is still valid.Meanwhile,we extend some known results.