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arXiv 0901.0381math.DGmath.KT
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C ~*-代数上Dirac算子的Atiyah-Patodi-Singer指标定理

The Atiyah-Patodi-Singer index theorem for Dirac operators over C*-algebras

Charlotte Wahl

摘要:

证明了C*-向量丛扭曲Dirac算子的Atiyah-Patodi-Singer指标定理.我们用它来推导出一个一般的产品公式的eta形式,并定义和研究新的rho不变量推广洛特的高rho形式。Leichtnam-Piazza的高Atiyah-Patodi-Singer指标定理可以通过将该定理应用于被与基本群的约化C*-代数相关联的Mishenko-Fomenko丛扭曲的Dirac算子来恢复。

英文摘要:

We prove an Atiyah-Patodi-Singer index theorem for Dirac operators twisted by C*-vector bundles. We use it to derive a general product formula for eta-forms and to define and study new rho-invariants generalizing Lott's higher rho-form. The higher Atiyah-Patodi-Singer index theorem of Leichtnam-Piazza can be recovered by applying the theorem to Dirac operators twisted by the Mishenko-Fomenko bundle associated to the reduced C*-algebra of the fundamental group.

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