紧李群在C ~*-代数上作用的指标理论
Index theory for actions of compact Lie groups on C*-algebras
摘要:
研究C*-代数上紧李群作用的指标理论,重点是主作用。给定C*-代数上的不变半有限迹,我们得到半有限谱三元组.对于圆作用,我们考虑与对偶Pimsner-Voiculescu序列的关系。在此过程中,我们证明了紧李群作用的“饱和”和“主要”概念是等价的。
英文摘要:
We study the index theory for actions of compact Lie groups on C*-algebras with an emphasis on principal actions. Given an invariant semifinite trace on the C*-algebra we obtain semifinite spectral triples. For circle actions we consider the relation to the dual Pimsner-Voiculescu sequence. On the way we show that the notions ``saturated'' and ``principal'' are equivalent for actions by compact Lie groups.
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。