
Summary: We define the notion of a characteristic fuzzy subgroup which is the analogue of a characteristic subgroup in the ordinary group theory and derive various new ones from a given characteristic fuzzy subgroup.
level subgroups, fuzzy groups, commutator fuzzy subgroups, Fuzzy groups, Subgroup theorems; subgroup growth, Theory of fuzzy sets, etc., characteristic fuzzy subgroups
level subgroups, fuzzy groups, commutator fuzzy subgroups, Fuzzy groups, Subgroup theorems; subgroup growth, Theory of fuzzy sets, etc., characteristic fuzzy subgroups
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