]> 2026-07-01T05:12:05+00:00 Normal closure 0 en Normal closure Dedekind group 0 en Dedekind group 2-Engel group 0 en 2-Engel group 0 Self-normalizing not implies contranormal#Normal closure# bc78ddd4d1fb2ee4ced8f07e47caa345 Defining ingredient 132 en Defining ingredient Page 132 en Page