]> 2026-07-26T08:20:51+00:00 Upper join-closed subgroup property 0 en Upper join-closed subgroup property Characteristic subgroup 0 en Characteristic subgroup 0 Characteristicity is not upper join-closed#Upper join-closed subgroup property;2# df139af2348e5b6aa4626b87b94d41f1 Normal subgroup 0 en Normal subgroup Dissatisfies metaproperty 132 en Dissatisfies metaproperty Page 132 en Page Satisfies metaproperty 132 en Satisfies metaproperty