With The Semi-discrete Solution By The Four State Repairable System Analysis

This paper presents a model of four-state system.We proof the solution of the system thatis exit and sole,which applies functional analysis and semi-group. We structure an elementarystep function to approximate the repair rate (i=2,3) in the system,model and presents thesemi-discretizationg model,which provides the theory foundation for the further :research ofnumerical calculation.