Groupoids and inverse semigroups associated to W*-algebras
  We investigate the Banach Lie groupoids and inverse semigroups naturally associated to W*-algebras. We also present statements describing relationship between these groupoids and the Banach Poisson geometry which follows in the canonical way from the W*-algebra structure. 
Anatol Odzijewicz, Aneta Sli\.zewska
math.OA math.DG math.GR