Existentially closed W*-probability spaces
Existentially closed W*-probability spaces
复制标题
存在封闭的 W*-概率空间
DOI:
10.1007/s00209-022-03038-z
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发表时间:
2022
影响因子:
0.8
通讯作者:
Houdayer, Cyril
中科院分区:
文献类型:
--
作者:
Goldbring, Isaac;Houdayer, Cyril
We study several model-theoretic aspects of W-probability spaces, that is,-finite von Neumann algebras equipped with a faithful normal state. We first study the existentially closed W-spaces and prove several structural results about such spaces, including that they are type IIIfactors that tensorially absorb the Araki–Woods factor. We also study the existentially closed objects in the restricted class of W-probability spaces with Kirchberg’s QWEP property, proving thatitself is such an existentially closed space in this class. Our results about existentially closed probability spaces imply that the class of type IIIfactors forms a-axiomatizable class. We show that for, the class of IIIfactors is not-axiomatizable but is-axiomatizable; this latter result uses a version of Keisler’s Sandwich theorem adapted to continuous logic. Finally, we discuss some results around elementary equivalence of IIIfactors. Using a result of Boutonnet, Chifan, and Ioana, we show that, for any, there is a family of pairwise non-elementarily equivalent IIIfactors of size continuum. While we cannot prove the same result for IIIfactors, we show that there are at least three pairwise non-elementarily equivalent IIIfactors by showing that the class of full factors is preserved under elementary equivalence.
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影响因子:
1.7
作者:
Scott Atkinson;Isaac Goldbring;Srivatsav Kunnawalkam Elayavalli
通讯作者:
Srivatsav Kunnawalkam Elayavalli
影响因子:
1
作者:
Isaac Goldbring
通讯作者:
Isaac Goldbring
DOI:
10.1112/jlms/jds081
发表时间:
2012-03
期刊:
Journal of the London Mathematical Society
影响因子:
--
作者:
Y. Ueda
通讯作者:
Y. Ueda
影响因子:
1.4
作者:
Hiroshi Ando;U. Haagerup;Cyril Houdayer;A. Marrakchi
通讯作者:
A. Marrakchi
DOI:
--
发表时间:
2012
期刊:
Journal of Symbolic Logic (JSL)
影响因子:
--
作者:
Isaac Goldbring;B. Hart;Thomas Sinclair
通讯作者:
Thomas Sinclair