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arXiv math/0606333math.OAmath.QA
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通过交叉积的Rieffel变形

Rieffel deformation via crossed products

P. Kasprzak

摘要:

我们从Rieffel数据(A,f,X)出发,其中A是C* 代数,X是阿贝尔群H在A上的作用,f是对偶群上的2-上圈.利用Landstad交叉积理论,得到了变形C* 代数-代数A(f).在H是实数的n阶笛卡儿积的情况下,我们得到了K-群在变形下不变性的一个非常简单的证明.在一般情况下,我们也得到一个非常简单的证明,即在形变下保持核性。我们展示了我们的方法如何导致量子群和调查他们的对偶性。文中以SL(2,C)的变形为例说明了一般理论。它的描述,在非交换坐标。

英文摘要:

We start from Rieffel data (A,f,X) where A is a C*-algebra, X is an action of an abelian group H on A and f is a 2-cocycle on the dual group. Using Landstad theory of crossed product we get a deformed C*-algebra A(f). In the case of H being the n-th Cartesian product of the real numbers we obtain a very simple proof of invariance of K-groups under the deformation. In the general case we also get a very simple proof that nuclearity is preserved under the deformation. We show how our approach leads to quantum groups and investigate their duality. The general theory is illustrated by an example of the deformation of SL(2,C). A description of it, in terms of noncommutative coordinates is given.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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