• normal subgroup
• normal subgroups

normal subgroup (suomeksi)

Määritelmät:

• (lb, en, group theory) A subgroup ''H'' of a group ''G'' that is invariant under conjugation; that is, for all elements ''h'' of ''H'' and for all elements ''g'' in ''G'', the element ''ghg''⁻¹ is in ''H''.