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相关论文: Rokhlin dimension: duality, tracial properties, an…

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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 present a systematic study of the structure of crossed products and fixed point algebras by compact group actions with the Rokhlin property on not necessarily unital C*-algebras. Our main technical result is the existence of an…

算子代数 · 数学 2016-05-31 Eusebio Gardella

In this paper, we give some properties of the fixed point algebra and the crossed product of a unital separable simple infinite dimensional C*-algebra by an action of a second-countable compact group with the tracial Rokhlin property with…

算子代数 · 数学 2025-07-08 Haotian Tian , Xiaochun Fang

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 define a "tracial" analog of the Rokhlin property for actions of second countable compact groups on infinite dimensional simple separable unital C*-algebras. We prove that fixed point algebras under such actions (and, in the appropriate…

算子代数 · 数学 2022-06-20 Javad Mohammadkarimi , N. Christopher Phillips

We establish four results concerning connections between actions on separable C*-algebras with Rokhlin-type properties and absorption of the Jiang-Su algebra Z. For actions of residually finite groups or of the reals which have finite…

算子代数 · 数学 2020-07-07 Ilan Hirshberg

We introduce and study a Rokhlin-type property for actions of finite groups on (not necessarily unital) C*-algebras. We show that the corresponding crossed product C*-algebras can be locally approximated by C*-algebras that are stably…

算子代数 · 数学 2014-01-28 Luis Santiago

We establish comparison and divisibility properties for crossed product C*-algebras arising from automorphisms of algebras C (X, D) which lie over minimal homeomorphisms, from actions of compact groups which have finite Rokhlin dimension…

We show that formation of crossed products and passage to fixed point algebras by compact group actions with finite Rokhlin dimension preserve the following regularity properties: finite decomposition rank, finite nuclear dimension, and…

算子代数 · 数学 2018-01-08 Eusebio Gardella

We prove that a number of classes of separable unital C*-algebras are closed under crossed products by finite group actions with the Rokhlin property, including: (1) AI algebras, AT algebras, and related classes characterized by direct…

算子代数 · 数学 2009-02-06 Hiroyuki Osaka , N. Christopher Phillips

In this paper, we establish a connection between Rokhlin dimension and the absorption of certain model actions on strongly self-absorbing C*-algebras. Namely, as to be made precise in the paper, let $G$ be a well-behaved locally compact…

算子代数 · 数学 2018-12-19 Gabor Szabo

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

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 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

Let $A$ be an infinite-dimensional stably finite simple unital C*-algebra, let $G$ be a finite group, and let $\alpha\colon G\rightarrow \mathrm{Aut}(A)$ be an action of $G$ on $A$ which has the weak tracial Rokhlin property. We prove that…

算子代数 · 数学 2024-07-16 Xiaochun Fang , Zhongli Wang

We show that any finite group admits actions on simple AF algebras with unique trace which have arbitrarily large finite values of Rokhlin dimension with commuting towers. We show similar results for actions of compact Lie groups, with AH…

算子代数 · 数学 2023-07-28 Ilan Hirshberg , N. Christopher Phillips

A long-standing open question in the theory of group actions on C*-algebras is the stable rank of the crossed product. Specifically, N. C. Phillips asked that if a finite group $G$ acts on a simple unital C*-algebra $A$ with stable rank…

算子代数 · 数学 2023-11-21 Parisa Elyasi , Nasser Golestani

We define the tracial Rokhlin property for actions of finite cyclic groups on stably finite simple unital C*-algebras. We prove that when the algebra is in addition simple and has tracial rank zero, then the crossed product again has…

算子代数 · 数学 2007-05-23 N. Christopher Phillips

We introduce and study the continuous Rokhlin property for actions of compact groups on C*-algebras. An important technical result is a characterization of the continuous Rokhlin property in terms of asymptotic retracts. As a consequence,…

算子代数 · 数学 2021-10-14 Eusebio Gardella

Tracial Rokhlin property was introduced by Phillips to prove various structure theorems for crossed product. But it is defined for actions on simple C*-algebras only. This paper consists of two major parts: In section 2 and 3, we study the…

算子代数 · 数学 2012-11-26 Qingyun Wang
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