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تسجيل مستخدم جديد$mathbb{A}^2$ -Fibrations between affine spaces are trivial $mathbb{A}^2$-bundles
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تأليف
Adrien Dubouloz
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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 $mathbb{A}^2$-bundle. An application is a positive answer to a version of the Dolgachev-Weisfeiler Conjecture for such fibrations: a flat fibration $mathbb{A}^m$ $rightarrow$ $mathbb{A}^n$ with all fibers isomorphic to $mathbb{A}^2$ is the trivial $mathbb{A}^2$-bundle.
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