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arXiv 0908.4554math.DG
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基本Dirac算子的谱

The spectrum of basic Dirac operators

Ken Richardson

摘要:

这是一篇综述性文章,介绍了一种已知的将狄拉克型算子推广为横截算子的基本狄拉克算子,称为黎曼叶理上的基本狄拉克算子,黎曼叶理是具有横截几何结构的光滑叶理。这些算子的构造需要额外的结构,即所谓的类权度量。我们用Habib-R.这种算子的谱是独立的选择的类似斗争的度量,提供的横向几何结构是固定的。我们讨论的后果,其中包括定义一个新版本的外部衍生物和德拉姆上同调,很好地适应这个横向几何设置。

英文摘要:

This is a survey article on a known generalization of Dirac-type operators to transverse operators called basic Dirac operators on Riemannian foliations, which are smooth foliations that have a transverse geometric structure. Construction of these operators requires the additional structure of what is called a bundle-like metric. We explain the result by Habib-R. that the spectrum of such an operator is independent of the choice of bundle-like metric, provided that the transverse geometric structure is fixed. We discuss consequences, which include defining a new version of the exterior derivative and de Rham cohomology that are nicely adapted to this transverse geometric setting.

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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