This article has introduced topological space Xs property of sequencable convergence and proved that this property is quotient property.
引进拓扑空间x的可序列收敛性质，证明了这一性质是可商的性质。
We introduce the notion of topological direct sum, and get a representative theorem of inductive limit by topological direct sum and quotient space.
然后引入拓扑直和的概念，利用它和商空间给出一个归纳极限表示定理。
应用推荐