Group in which every subgroup has a subnormalizer
This article defines a group property: a property that can be evaluated to true/false for any given group, invariant under isomorphism
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VIEW RELATED: Group property implications | Group property non-implications |Group metaproperty satisfactions | Group metaproperty dissatisfactions | Group property satisfactions | Group property dissatisfactions
Not every group is of this kind because subnormality is not upper join-closed (specifically, any counterexample to subnormality not being upper join-closed gives a subgroup of a group that does not have a subnormalizer).