平滑函子与Differential Forms
Smooth Functors vs. Differential Forms
摘要:
建立了定义在光滑流形的道路2-广群上的光滑2-函子与该流形上的微分形式之间的关系。这种关系可以被理解为范畴论和微分几何的基本概念之间的字典的一部分。我们表明,光滑2-函子出现在几个领域,即连接(非交换)gerbes,作为曲率的光滑函子和临界点在BF理论。我们进一步证明,我们的字典提供了一个强大的工具来讨论的逾越几何对象的闭路空间。
英文摘要:
We establish a relation between smooth 2-functors defined on the path 2-groupoid of a smooth manifold and differential forms on this manifold. This relation can be understood as a part of a dictionary between fundamental notions from category theory and differential geometry. We show that smooth 2-functors appear in several fields, namely as connections on (non-abelian) gerbes, as curvatures of smooth functors and as critical points in BF theory. We demonstrate further that our dictionary provides a powerful tool to discuss the transgression of geometric objects to loop spaces.
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