3 papers
math.OA2026
A note on purely infinite corona algebras and extensions
Ping Wong Ng, Cangyuan Wang
Let be a separable nuclear C*-algebra, and be a nonunital separable simple -stable C*-algebra. Continuing the work from Gabe-Lin-Ng, we cla…
math.OA2025
A note on proper asymptotic uniqueness for semifinite factors
Ping Wong Ng, Cangyuan Wang
Let be a separable nuclear C*-algebra, and let be a semifinite von Neumann factor with separable predual. Let $ϕ, ψ: \mathcal{A} \rightarrow \mathcal{M}…
math.OA2024
On spectral flow for operator algebras
Ping Wong Ng, Arindam Sutradhar, Cangyuan Wang
Spectral flow was first studied by Atiyah and Lusztig, and first appeared in print in the work of Atiyah-Patodi-Singer (APS). For a norm-continuous path of self-adjoint Fredholm op…