Definition 0.1. A Borel isomorphism between two Borel spaces (X; 𝔹(X)) and (Y ; 𝔹(Y ))
is defined as the bijection ι : (X; 𝔹(X))
(Y ; 𝔹(Y )).
References
[1] M.R. Buneci. 2006., Groupoid C*-Algebras., Surveys in Mathematics and its
Applications, Volume 1: 71–98.
[2] A. Connes.1979. Sur la théorie noncommutative de l’ integration, Lecture Notes in
Math., Springer-Verlag, Berlin, 725: 19-14.
