Upward-closed 2-subnormal 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]
Definition with symbols
A subgroup of a group is termed an upward-closed 2-subnormal subgroup of if whenever , is a 2-subnormal subgroup of .