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Commutator Subgroups of Generalized Hecke and Extended Generalized Hecke Groups
Abstract Let p and q be integers such that 2 ≤ p ≤ q; p + q > 4 and let H p,q be the generalized Hecke group associated to p and q: The generalized Hecke group Hp,q is generated by X(z) = -(z-λ p ) -1 and Y (z) …