Mathematics – Differential Geometry
Scientific paper
2009-01-28
David Bl\'azquez-Sanz, Affine Structures in Jet and Weil Bundles Colloq. Math. 114 (2009), no. 2, 291-305
Mathematics
Differential Geometry
16 pages
Scientific paper
Weil algebra morphism induce natural transformations between Weil bundles. In some well known cases, a natural transformation is endowed with a canonical structure of affine bundle. We show that this structure arises only when the Weil algebra morphism is surjective and its kernel has null square. Moreover, in some cases, this structure of affine bundle is passed down to Jet spaces. We give a characterization of this fact in algebraic terms. This algebraic condition also determines an affine structure between the groups of automorphisms of related Weil algebras
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