本篇論文，主要是介紹在年齡有限的情況下，建立具有年齡結構的連續人口線性模型，並找出其相對應的半群及無限小生成子。 The purpose of this paper is to set up a linear age-dependent population model with finite age range. We shall view the model as an abstract evolution equation in the Banach space L1 and associate with its solutions a strongly continuous semigroup of linear operator in this space.
