The equivalence relation on a finite set is an important relation, which relates to the partition on the set.

有限集上等价关系是一个重要的关系，它同集合的划分有着密切的联系。

youdao

The equivalence relation on a finite set is an important relation, which relates to the partition on the set.

有限集上等价关系是一个重要的关系，它同集合的划分有着密切的联系。

youdao