Natural bundle

From HandWiki

In mathematics, a natural bundle is any fiber bundle associated to the s-frame bundle [math]\displaystyle{ F^s(M) }[/math] for some [math]\displaystyle{ s \geq 1 }[/math]. It turns out that its transition functions depend functionally on local changes of coordinates in the base manifold [math]\displaystyle{ M }[/math] together with their partial derivatives up to order at most [math]\displaystyle{ s }[/math].[1] The concept of a natural bundle was introduced by Albert Nijenhuis as a modern reformulation of the classical concept of an arbitrary bundle of geometric objects.[2]

An example of natural bundle (of first order) is the tangent bundle [math]\displaystyle{ TM }[/math] of a manifold [math]\displaystyle{ M }[/math].

Notes

  1. Palais, Richard; Terng, Chuu-Lian (1977), "Natural bundles have finite order", Topology 16: 271–277, doi:10.1016/0040-9383(77)90008-8 
  2. A. Nijenhuis (1972), Natural bundles and their general properties, Tokyo: Diff. Geom. in Honour of K. Yano, pp. 317–334 

References