This paper first prove an inverse limit theorem of strongly submetacompact spaces;
首先证明了强次亚紧空间的一个逆极限定理；
This paper characterizes collective pullbacks and I-pullbacks by means of inverse limit 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；
This paper characterizes collective pullbacks and I-pullbacks by means of inverse limit 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；
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