2 papers
math.OA2021
Simplicity, bounded normal generation, and automatic continuity of groups of unitaries
Abhinav Chand, Leonel Robert
We show that the commutator subgroup of the group of unitaries connected to the identity in a simple unital C*-algebra is simple modulo its center. We then go on to investigate the…
math.OA2020
Simultaneous averaging to zero by unitary mixing operators
Abhinav Chand, Leonel Robert, Arindam Sutradhar
We show that if every element a vector subspace of a C*-algebra can be averaged to zero by means of unitary mixing operators, then all the elements of the subspace can be simultane…