Christopher Schafhauser

activity

20142026

most citedA synchronous game for binary constraint systems

46 citations · 98 across the 16 of their papers we have counts for

collaborators

21 papers

math.OA2026

Regular simple nuclear C*-algebras

Samuel Evington, Shanshan Hua, Christopher Schafhauser +3

We prove Z-stability for all simple, separable, pure, nuclear C*-algebras. Combining this with very recent work of Thiel completes the proof of the Toms-Winter conjecture. We do th…

math.OA2025

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 $C^{*}$ -…

math.OA2024

KK-rigidity of simple nuclear C*-algebras

Christopher Schafhauser

It is shown that if $A$ and $B$ are unital separable simple nuclear $Z$ -stable C $^{*}$ -algebras and there is a unital embedding $A \to B$ which is invertible on $K K$ …

math.OA2023

An asymptotic homotopy lifting property

José R. Carrión, Christopher Schafhauser

A $C^{*}$ -algebra $A$ is said to have the homotopy lifting property if for all $C^{*}$ -algebras $B$ and $E$ , for every surjective $^{*}$ -homomorphism $π : E \to B$ and for ev…

math.OA2023

Tracially Complete C*-Algebras

José R. Carrión, Jorge Castillejos, Samuel Evington +4

We introduce a new class of operator algebras -- tracially complete C*-algebras -- as a vehicle for transferring ideas and results between C*-algebras and their tracial von Neumann…