Boundary maps and covariant representations

التفاصيل البيبلوغرافية
العنوان: Boundary maps and covariant representations
المؤلفون: Kalantar, Mehrdad, Scarparo, Eduardo
سنة النشر: 2021
المجموعة: Mathematics
مصطلحات موضوعية: Mathematics - Operator Algebras
الوصف: We extend applications of Furstenberg boundary theory to the study of $C^*$-algebras associated to minimal actions $\Gamma\!\curvearrowright\! X$ of discrete groups $\Gamma$ on locally compact spaces $X$. We introduce boundary maps on $(\Gamma,X)$-$C^*$-algebras and investigate their applications in this context. Among other results, we completely determine when $C^*$-algebras generated by covariant representations arising from stabilizer subgroups are simple. We also characterize the intersection property of locally compact $\Gamma$-spaces and simplicity of their associated crossed products.
Comment: 17 pages. Minor changes. Accepted in the Bulletin of the LMS
نوع الوثيقة: Working Paper
URL الوصول: http://arxiv.org/abs/2106.06382
رقم الأكسشن: edsarx.2106.06382
قاعدة البيانات: arXiv