3 papers
math.OA2026
Free Independence is not definable
William Boulanger, Jakub Curda, Emma Harvey +2
Free independence is an important tool for studying the structure of operator algebras. It is natural to ask from the model-theoretic standpoint whether free independence is captur…
math.OA2026
Examples of W and C-superrigid product groups
Jakub Curda, Daniel Drimbe
We provide a new large class of amalgamated free product groups for which the product rigidity result from [CdSS15] holds: if …
math.OA2026
Graph C*-algebras are singly generated
Jakub Curda, Julian Gonzales, Victor Wu
We show that the -algebra of a countable directed graph is singly generated. As a consequence, any -algebra generated by a countable family of projections and partial iso…