2 papers
math.OA2026
A Banach algebra encoding quantum group duality
Jason Crann, Matthias Neufang
We introduce and study a new Banach algebra structure on the trace-zero subspace of trace class operators for any locally compact quantum group $\m…
math.OA2025
Fejér representations for discrete quantum groups and applications
Jason Crann, Soroush Kazemi, Matthias Neufang
We prove that a discrete quantum group has the approximation property if and only if a Fejér-type representation holds for its -algebraic or von Neumann algebrai…