Hilbert C*-modules and conditional expectations on crossed products
Hilbert C*-modules and conditional expectations on crossed products
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Hilbert C* 模块和交叉乘积的条件期望
DOI:
10.1017/s1446788700000100
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发表时间:
1996
期刊:
影响因子:
--
通讯作者:
M. Khoshkam
中科院分区:
文献类型:
--
作者:
M. Khoshkam
Abstract In this paper, we study the structure of certain conditional expectation on crossed product C*-algebra. In particular, we prove that the index of a conditional expectation E: B → A is finite if and only if the index of the induced expectation from B ⋊ G onto A ⋊ G is finite where G is a discrete group acting on B.