Browsing Mathematics (Scholarly Articles) by Subject "Picard modular group"
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The subgroup measuring the defect of the Abelianization of SL_2(Z[i])
(Springer, 20130210)There is a natural inclusion of SL2(Z) into SL2(Z[i]) , but it does not induce an injection of commutator factor groups (Abelianizations). In order to see where and how the 3 torsion of the Abelianization of SL2(Z) ...