Browsing by Author "Yamashita, Makoto"

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    Homology and K-Theory of Torsion-Free Ample Groupoids and Smale Spaces
    (Oberwolfach : Mathematisches Forschungsinstitut Oberwolfach, 2020) Proietti, Valerio; Yamashita, Makoto
    Given an ample groupoid, we construct a spectral sequence with groupoid homology with integer coefficients on the second sheet, converging to the K-groups of the groupoid C*-algebra when the groupoid has torsion-free stabilizers and satisfies the strong Baum–Connes conjecture. The construction is based on the triangulated category approach to the Baum–Connes conjecture by Meyer and Nest. For the unstable equivalence relation of a Smale space with totally disconnected stable sets, this spectral sequence shows Putnam's homology groups on the second sheet.