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arXiv · 1501.04304

Ineffective descent of genus one curves

Wouter Zomervrucht
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Abstract

Raynaud proved in 1968 that etale descent of genus one curves is not effective in general. In this paper we provide an alternative, simplified construction of this phenomenon. Our counterexample is fully explicit.

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Wouter Zomervrucht. 2015-01-18. Ineffective descent of genus one curves. https://arxiv.org/abs/1501.04304

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