2 papers
math.OA2026
Normal coactions extend to the C*-envelope
Kevin Aguyar Brix, Chris Bruce, Adam Dor-On
We show that a normal coaction of a discrete group on an operator algebra extends to a normal coaction on the C*-envelope. This resolves an open problem attempted by several expert…
math.OA2025
Maximal ideals of reduced group C*-algebras and Thompson's groups
Kevin Aguyar Brix, Chris Bruce, Kang Li +1
Given a conditional expectation from a C*-algebra onto a C*-subalgebra , we observe that induction of ideals via , together with a map which we call co-induction, for…