An exotic II$_1$ factor without property Gamma

Autor:	Chifan, Ionut, Ioana, Adrian, Elayavalli, Srivatsav Kunnawalkam
Rok vydání:	2022
Předmět:	Mathematics - Operator Algebras Mathematics - Functional Analysis Mathematics - Logic
Druh dokumentu:	Working Paper
Popis:	We introduce a new iterative amalgamated free product construction of II$_1$ factors, and use it to construct a separable II$_1$ factor which does not have property Gamma and is not elementarily equivalent to the free group factor $\text{L}(\mathbb F_n)$, for any $2\leq n\leq \infty$. This provides the first explicit example of two non-elementarily equivalent II$_1$ factors without property Gamma. Moreover, our construction also provides the first explicit example of a II$_1$ factor without property Gamma that is also not elementarily equivalent to any ultraproduct of matrix algebras. Our proofs use a blend of techniques from Voiculescu's free entropy theory and Popa's deformation/rigidity theory. Comment: Change in title
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2209.10645 Zobrazit plný text záznamu View this record from Arxiv