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arXiv · 2207.11289

Extensions and torsors for finite group schemes

Peter Bruin
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Abstract

We give an explicit description of the category of central extensions of a group scheme by a sheaf of Abelian groups. Based on this, we describe a framework for computing with central extensions of finite commutative group schemes, torsors under such group schemes and groups of isomorphism classes of these objects.

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Peter Bruin. 2022-07-22. Extensions and torsors for finite group schemes. https://arxiv.org/abs/2207.11289

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