Semigroup C*-algebras arising from graphs of monoids

发布时间:2023-06-12浏览次数:420

题目:Semigroup C*-algebras arising from graphs of monoids


报告人:陈诚中山大学

 

时间:6月21星期三),16:00-17:30

 

地点:明德楼B201-1

Zoom会议会议号:882 8540 7533密码:028422

 

摘要:Semigroup C*-algebras provide abundant examples in C*-algebras. For semigroups that are far from groups, we encounter completely new phenomena which are not visible in the group case. In the talk, we will introduce a special class of C*-algebras, namely semigroup C*-algebras arising from graphs of monoids. We will analyse their structral properties, including closed invariant subsets and topological freeness of the groupoids as well as simplicity, nuclearity, pure infiniteness and K-theory of the semigroup C*-algebras. Finally, we will give a classification of boundary quotients of the semigroup C*-algebras.


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