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    • On the equivariant K-homology of PSL_2 of the imaginary quadratic integers 

      Rahm, Alexander D. (Association des Annales de l'Institut Fourier, 2016-09)
      We establish formulae for the part due to torsion of the equivariant $K$-homology of all the Bianchi groups (PSL$_2$ of the imaginary quadratic integers), in terms of elementary number-theoretic quantities. To achieve this, ...