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math.KT2012★ 12 cited
Higher torsion in the Abelianization of the full Bianchi groups
Alexander D. Rahm
Consider the Bianchi groups, namely the SL_2 groups over rings of imaginary quadratic integers. In the literature, there has been so far no example of p-torsion in the integral hom…
math.KT2012
On a question of Serre
Alexander D. Rahm
Consider the Borel-Serre compactification of the quotient of hyperbolic 3-space by a finite index subgroup in a Bianchi group, and in particular the following question which Serre…