The Dual Model of a Repairable System

This paper builds a new class of repairable system model from the dual perspective, that is, the dual model of the original one, and points out the practical meaning of this model; at the same time, we give the adjoint operator (A+E)* of the operator A+E, which is the infinitesimal generator corresponding the Cauchy problem of the former model. We, at last, give the stable solutions of the new dual model.