arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.05543math.OA
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简单自相似图$C^\ast$ -代数的二分法

A dichotomy for simple self-similar graph $C^\ast$-algebras

Hossein Larki

摘要:

研究了可数自相似图$(G,E,φ)$的Exel-Pardo $C^*$ -代数$\mathcal{O}_{G,E}$的纯无限性和稳定有限性.特别地,我们将一个特殊的普通图$\widetilde{E}$与$(G,E,φ)$联系起来,使得图$C^*$ -代数$C^*(\widetilde{E})$的简单性、稳定有限性或纯无限性等性质蕴涵于图$\mathcal{O}_{G,E}$ .其中,这遵循简单$\mathcal{O}_{G,E}$的二分法:如果$(G,E,φ)$不包含$G$ -回路,则$\mathcal{O}_{G,E}$是稳定有限的;否则,$\mathcal{O}_{G,E}$是纯无限的。此外,Li和Yang最近引入了自相似$k$ -图$C^*$ -代数$\mathcal{O}_{G,Λ}$ .我们还表明,当$|Λ^0|<\infty$和$\mathcal{O}_{G,Λ}$是简单的,那么它是纯粹的无限。

英文摘要:

We investigate the pure infiniteness and stable finiteness of the Exel-Pardo $C^*$-algebras $\mathcal{O}_{G,E}$ for countable self-similar graphs $(G,E,φ)$. In particular, we associate a specific ordinary graph $\widetilde{E}$ to $(G,E,φ)$ such that some properties such as simpleness, stable finiteness or pure infiniteness of the graph $C^*$-algebra $C^*(\widetilde{E})$ imply that of $\mathcal{O}_{G,E}$. Among others, this follows a dichotomy for simple $\mathcal{O}_{G,E}$: if $(G,E,φ)$ contains no $G$-circuits, then $\mathcal{O}_{G,E}$ is stably finite; otherwise, $\mathcal{O}_{G,E}$ is purely infinite. Furthermore, Li and Yang recently introduced self-similar $k$-graph $C^*$-algebras $\mathcal{O}_{G,Λ}$. We also show that when $|Λ^0|<\infty$ and $\mathcal{O}_{G,Λ}$ is simple, then it is purely infinite.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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