The External Problems of Nonlinear Singular Systems
广义非线性系统的极限值问题

In this paper,the external problems of nonlinear singular systems are discussed by using monotone iterative technique and the method of upper and lower solutions.We have proved the existence of external solutions to nonlinear singular systems in a constructive manner.Our sequences constructed are the solutions of linear systems,therefore it is easy to realize the numerical calculation. And it has extended to nonlinear differential systems.