Subnormal-to-normal subgroup

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This article defines a subgroup property: a property that can be evaluated to true/false given a group and a subgroup thereof, invariant under subgroup equivalence. View a complete list of subgroup properties[SHOW MORE]


BEWARE! This term is nonstandard and is being used locally within the wiki. [SHOW MORE]

Definition

Symbol-free definition

A subgroup of a group is termed subnormal-to-normal if it is either normal in the whole group, or not subnormal in the whole group.

Every subgroup is subnormal-to-normal iff the group is a T-group.