Commutator subgroups of the power subgroups of Hecke groups H(lambda(q)) II

Abstract

Let q >= 3 be an odd number and let H(lambda(q)) be the Hecke group associated to q. Let m be a positive integer and let H-m(lambda(q)) be the m-th power subgroup of H(lambda(q)). In this work, we study the commutator subgroups of the power subgroups H-m(lambda(q)) of H(lambda(q)).