Hilbert C*‐modules over a commutative C*‐algebra
Hilbert C*‐modules over a commutative C*‐algebra
复制标题
可交换 C* 代数上的希尔伯特 C* 模
DOI:
--
复制
发表时间:
2009
期刊:
影响因子:
--
通讯作者:
A. Tikuisis
中科院分区:
文献类型:
--
作者:
L. Robert;A. Tikuisis
This paper studies the problems of embedding and isomorphism for countably generated Hilbert C*‐modules over commutative C*‐algebras. When the fiber dimensions differ sufficiently, relative to the dimension of the spectrum, we show that there is an embedding between the modules. This result continues to hold over recursive subhomogeneous C*‐algebras. For certain modules, including all modules over C0(X) when dim X ⩽ 3, isomorphism and embedding are determined by the restrictions to the sets where the fiber dimensions are constant. These considerations yield results for the Cuntz semigroup, including a computation of the Cuntz semigroup for C0(X) when dim X ⩽ 3, in terms of cohomological data about X.