AN n-DISTRICT MIGRATING POPULATION DEVELOPING SYSTEM
多地区多向流动的人口发展系统

Since Song Jian et al.gave the n-district population developing equations in 1],many re-sults have been obtained for n=1,but only few papers discussed the case n>1.In this paper atheorem on uniquencess and the existence of n-district population equations is proved and thespectral properties of the n-district population operator A+B are discussed,and a necessary andsufficient condition of the stability is given.