This paper first prove an inverselimit theorem of strongly submetacompact spaces;
首先证明了强次亚紧空间的一个逆极限定理;
2
This paper characterizes collective pullbacks and I-pullbacks by means of inverselimit and discusses the relationship between I-pullbacks and pullbacks.
利用逆向极限刻画集体拉回与I-拉回,探讨I-拉回与拉回间的关系;
3
This article mainly discusses some usage of criteria of limit existence and their inverse -propositions, and solves the problems of nonexistence of limit easily.