Approaching the UCT problem via crossed products of the Razak–Jacelon algebra
Approaching the UCT problem via crossed products of the Razak–Jacelon algebra
We show that the UCT problem for separable, nuclear C*-algebras relies only on whether the UCT holds for crossed products of certain finite cyclic group actions on the Razak–Jacelon algebra. This observation is analogous to and in fact recovers a characterization of the UCT problem in terms of finite group …