时变疾病控制系统的解的存在性

Existence of Solution for a Class of Time-Varying Illness Control Systems

研究了一类时变疾病控制系统．用特征线法、积分方程和泛函分析的理论证明了系统的解的存在性，给出了解｛ｐ１（ｒ，ｔ），ｐ２（ｒ，ｓ，ｔ）｝的解析表达式．

The paper researches a class of time varying illness control system. It proved the existence of solution for the systems by the methods of characteristic, the theories of integro equation and functional analysis. And in this paper the analytic representations for the solution {p 1(r,t),p 2(r,s,t)} is given.