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We investigate symmetries on unital Kirchberg algebras with respect to the Rokhlin property and finite Rokhlin dimension. In stark contrast to the restrictiveness of the Rokhlin property, every such outer action has Rokhlin dimension at…

算子代数 · 数学 2016-10-27 Selcuk Barlak , Dominic Enders , Hiroku Matui , Gabor Szabo , Wilhelm Winter

Let $\Omega$ be a class of unital ${\rm C^*}$-algebras which have the second type tracial nuclear dimensional at moat $n$ (or have tracial nuclear dimensional at most $n$). Let $A$ be an infinite dimensional unital simple ${\rm…

算子代数 · 数学 2023-05-09 Qingzhai Fan , Jiahui Wang

Let $P \subset A$ be an inclusion of $\sigma$-unital C*-algebras with a finite index in the sense of Izumi. Then we introduce the Rokhlin property for a conditional expectation $E$ from $A$ onto $P$ and show that if $A$ is simple and…

算子代数 · 数学 2018-03-23 Hiroyuki Osaka , Tamotsu Teruya

We introduce the concept of Rokhlin dimension for actions of residually compact groups on C*-algebras, which extends and unifies previous notions for actions of compact groups, residually finite groups and the reals. We then demonstrate…

算子代数 · 数学 2026-02-03 Xin Cao , Xiaochun Fang , Jianchao Wu

We study Z-actions on unital simple separable stably finite C*-algebras of finite nuclear dimension. Assuming that the extreme boundary of the trace space is compact and finite dimensional, and that the induced action on the trace space is…

算子代数 · 数学 2016-08-04 Hung-Chang Liao

We study the topological variant of Rokhlin dimension for topological dynamical systems (X,{\alpha},Z^m) in the case where X is assumed to have finite covering dimension. Finite Rokhlin dimension in this sense is a property that implies…

算子代数 · 数学 2015-03-13 Gabor Szabo

Given a separable, AF-algebra A and an inductive limit action on A of a finitely generated abelian group with finite Rokhlin dimension with commuting towers, we give a local description of the associated crossed product C*-algebra. In…

算子代数 · 数学 2026-02-13 Sureshkumar M , Prahlad Vaidyanathan

We study compact group actions with finite Rokhlin dimension, particularly in relation to crossed products. For example, we characterize the duals of such actions, generalizing previous partial results for the Rokhlin property. As an…

算子代数 · 数学 2020-10-01 Eusebio Gardella , Ilan Hirshberg , Luis Santiago

We extend the notion of Rokhlin dimension from topological dynamical systems to $C^*$-correspondences. We show that in the presence of finite Rokhlin dimension and a mild quasidiagonal-like condition (which, for example, is automatic for…

算子代数 · 数学 2016-08-12 N. P. Brown , A. Tikuisis , A. M. Zelenberg

We develop the notion of Rokhlin dimension for partial actions of finite groups, extending the well-established theory for global systems. The partial setting exhibits phenomena that cannot be expected for global actions, usually stemming…

算子代数 · 数学 2022-01-25 Fernando Abadie , Eusebio Gardella , Shirly Geffen

We introduce the concept of Rokhlin dimension for actions of residually finite groups on C*-algebras, extending previous notions of Rokhlin dimension for actions of finite groups and the integers, as introduced by Hirshberg, Winter and the…

算子代数 · 数学 2022-02-22 Gabor Szabo , Jianchao Wu , Joachim Zacharias

A $C^*$-algebra is said to have the LP property if the linear span of projections is dense in a given algebra. In the first part of this paper, we show that an AH algebra $A = \underrightarrow{\lim}(A_i,\phi_i)$ has the LP property if and…

算子代数 · 数学 2012-10-22 Dinh Trung Hoa , Toan Minh Ho , Hiroyuki Osaka

We show that for any locally compact Hausdorff space $Y$ with finite covering dimension and for any continuous flow $\mathbb{R} \curvearrowright Y$, the resulting crossed product $C^*$-algebra $C_0(Y) \rtimes \mathbb{R}$ has finite nuclear…

算子代数 · 数学 2021-05-12 Ilan Hirshberg , Jianchao Wu

We compute the nuclear dimension of separable, simple, unital, nuclear, Z-stable C*-algebras. This makes classification accessible from Z-stability and in particular brings large classes of C*-algebras associated to free and minimal actions…

算子代数 · 数学 2021-04-07 Jorge Castillejos , Samuel Evington , Aaron Tikuisis , Stuart White , Wilhelm Winter

We introduce a notion of Rokhlin dimension for one parameter automorphism groups of C*-algebras. This generalizes Kishimoto's Rokhlin property for flows, and is analogous to the notion of Rokhlin dimension for actions of the integers and…

算子代数 · 数学 2018-01-12 Ilan Hirshberg , Gabor Szabo , Wilhelm Winter , Jianchao Wu

We study Rokhlin dimension of Z^m-actions on simple separable stably finite nuclear C*-algebras. We prove that under suitable assumptions, a strongly outer Z^m-action has finite Rokhlin dimension. This extends the known result for…

算子代数 · 数学 2017-11-16 Hung-Chang Liao

We develop the concept of Rokhlin dimension for integer and for finite group actions on C*-algebras. Our notion generalizes the so-called Rokhlin property, which can be thought of as Rokhlin dimension 0. We show that finite Rokhlin…

算子代数 · 数学 2014-11-04 Ilan Hirshberg , Wilhelm Winter , Joachim Zacharias

We prove that Z-stable, simple, separable, nuclear, non-unital C*-algebras have nuclear dimension at most 1. This completes the equivalence between finite nuclear dimension and Z-stability for simple, separable, nuclear, non-elementary…

算子代数 · 数学 2020-11-18 Jorge Castillejos , Samuel Evington

We introduce the nuclear dimension of a C*-algebra; this is a noncommutative version of topological covering dimension based on a modification of the earlier concept of decomposition rank. Our notion behaves well with respect to inductive…

算子代数 · 数学 2009-03-31 Wilhelm Winter , Joachim Zacharias

In this paper we will introduce the tracial Rokhlin property for an inclusion of separable simple unital C*-algebras $P \subset A$ with finite index in the sense of Watatani, and prove theorems of the following type. Suppose that $A$…

算子代数 · 数学 2014-05-01 Hiroyuki Osaka , Tamotsu Teruya
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