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arXiv · 1207.4810

Genus one curves and Brauer-Severi varieties

Aise Johan de Jong·Wei Ho
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Abstract

Let K be a field. Let A be a central simple algebra over K and let X be the associated Brauer-Severi variety over K. It has recently been asked if there exists a genus 1 curve C over K such that K(C) splits A. In other words, is there a genus one curve C over K with a morphism to X? In this short note, we explicitly construct such a curve in the case where X has dimension at most 4 (equivalently, when A has degree at most 5).

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Aise Johan de Jong, Wei Ho. 2012-07-19. Genus one curves and Brauer-Severi varieties. https://arxiv.org/abs/1207.4810

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