English

$\mathbb{A}^2$ -Fibrations between affine spaces are trivial $\mathbb{A}^2$-bundles

Algebraic Geometry 2017-04-17 v1

Abstract

We give a criterion for a flat fibration with affine plane fibers over a smooth scheme defined over a field of characteristic zero to be a Zariski locally trivial A2\mathbb{A}^2-bundle. An application is a positive answer to a version of the Dolgachev-Weisfeiler Conjecture for such fibrations: a flat fibration Am\mathbb{A}^m \rightarrow An\mathbb{A}^n with all fibers isomorphic to A2\mathbb{A}^2 is the trivial A2\mathbb{A}^2-bundle.

Keywords

Cite

@article{arxiv.1704.04440,
  title  = {$\mathbb{A}^2$ -Fibrations between affine spaces are trivial $\mathbb{A}^2$-bundles},
  author = {Adrien Dubouloz},
  journal= {arXiv preprint arXiv:1704.04440},
  year   = {2017}
}
R2 v1 2026-06-22T19:17:32.786Z