3 papers
math.OA2025
Entanglement in C-algebras: tensor products of state spaces
Magdalena Musat, Mikael Rørdam
We analyze the Namioka-Phelps minimal and maximal tensor products of compact convex sets which arise as the state spaces of unital C-algebras. Relatedly, we study entanglement…
math.OA2024
The Space of Tracial States on a C-Algebra
Bruce Blackadar, Mikael Rørdam
We give a simple and elementary proof that the tracial state space of a unital C-algebra is a Choquet simplex, using the center-valued trace on a finite von Neumann algebra.
math.OA2023
Around traces and quasitraces
Henning O. Milhøj, Mikael Rørdam
This paper presents a survey of results on traces and quasitraces on C-algebras, and it provides some new results on traces on ultrapowers and on the existence of faithful trac…