1550075568-C-Algebras_and_Finite-Dimensional_Approximations__Brown_

58 2. Nuclear and Exact C* -Algebras

2.8. References

Proposition 2.3.8 is due to Effros-Lance; they are largely responsible for
the systematic study of tensor products and approximation properties [60].
Amenable groups arose from von Neumann's work on the Banach-Tarski
paradox. Theorem 2.6.8, the only really substantial result in this chap-
ter, is the work of many hands. See [139] for more, including history and
references, on this important class of groups.