Christopher Schafhauser

collaborators

2 papers

math.OA2026

Nuclear C*-algebras: 99 problems

Christopher Schafhauser, Aaron Tikuisis, Stuart White

We present a collection of questions related to the structure and classification of nuclear C*-algebras.

math.OA2025

Negative resolution to the $C^{*}$ -algebraic Tarski problem

Srivatsav Kunnawalkam Elayavalli, Christopher Schafhauser

We compute the $K_{1}$ -group of ultraproducts of unital, simple $C^{*}$ -algebras with unique trace and strict comparison. As an application, we prove that the reduced free group $C^{*}$ -…

Nuclear C*-algebras: 99 problems

Negative resolution to the C∗-algebraic Tarski problem

Negative resolution to the $C^{*}$ -algebraic Tarski problem