The concepts of VV fuzzy subset and VV fuzzy subgroup are introduced and some equivalent conditions are given.
引入向量值模糊子集与向量值模糊子群的概念，并给出若干等价条件。
Some properties of VV normal fuzzy subgroup and VV fuzzy quotient group are discussed and the isomorphism theorem of VV fuzzy quotient group is established.
最后讨论了向量值正规模糊子群与向量值模糊商群的性质，同时建立了向量值模糊商群的同构定理。
In this paper the definition and theorems of unascertained subgroup are introduced. And on this basis, the relationship between unascertained subgroup and fuzzy and general subgroup is discussed.
给出未确知子群的定义和相应的定理，在此基础上，讨论未确知子群与模糊子群、一般子群的关系。
In this paper the definition and theorems of unascertained subgroup are introduced. And on this basis, the relationship between unascertained subgroup and fuzzy and general subgroup is discussed.
给出未确知子群的定义和相应的定理，在此基础上，讨论未确知子群与模糊子群、一般子群的关系。
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