The equivalent definitions of the first prolongation and the prolongational set of a set are discussed.

利用拓扑分析方法给出延伸集与延伸极限集的等价定义及它们是连通的条件。

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The equivalent definitions of the first prolongation and the prolongational set of a set are discussed.

利用拓扑分析方法给出延伸集与延伸极限集的等价定义及它们是连通的条件。

youdao