Representations of groups as quotient groups. II. Minimal central chains of a group
Representations of groups as quotient groups. II. Minimal central chains of a group
if we define (U, V), for U and V subgroups of G, as the subgroup generated by all the commutators (u, v) = u'lv-luv for u in U and v in V. A central chain is clearly minimal if we substitute equality for the inequality just mentioned. It is obvious …