Classification of reduced free products of nuclear C*-algebras
Consider the countably infinite reduced free product $D$ of copies of $(\mathrm C([0,1]),λ)$, where $λ$ is Lebesgue measure. It is proved that finite and countable reduced free products of unital separable nuclear UCT $\mathrm C^*$-algebras with respect to a chosen family of faithful traces are classified, after adjoining $D$, by the Elliott invariant. In other words, an isomorphism between the naive K-theory invariants of two such algebras is induced by an isomorphism between the algebras.
Authors
- George A. Elliott (ORCID: https://orcid.org/0000-0003-0173-5917)
- Chun Guang Li (ORCID: https://orcid.org/0000-0002-8814-4898)
- Zhuang Niu
Publication Details
- Journal
- arXiv (Cornell University)
- Published
- 2026-10-27
- DOI
- https://doi.org/10.48550/arxiv.2610.36459
- Primary Topic
- Advanced Operator Algebra Research
- Type
- preprint