论文标题
在中间子代理之间的内部角度的可能值
On possible values of the interior angle between intermediate subalgebras
论文作者
论文摘要
我们表明,间隔$ [0,\fracπ{2}] $中的所有值都可以作为中间子代理(在[3]中引入的)中的内部角度来实现,该角度的一定包含一个简单的Unital C*-Algebras。我们还计算了中间交叉产物亚代代代代数的内部角度,这些杂交代数包括对应于可数离散基团及其亚组对Unital C*-Algebra的任何作用。
We show that all values in the interval $[0,\fracπ{2}]$ can be attained as the interior angle between intermediate subalgebras (as introduced in [3]) of a certain inclusion of simple unital C*-algebras. We also calculate the interior angle between intermediate crossed product subalgebras of any inclusion of crossed product algebras corresponding to any action of a countable discrete group and its subgroups on a unital C*-algebra.