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arXiv · 1403.2572

Fields generated by torsion points of elliptic curves

Andrea Bandini·Laura Paladino
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Abstract

Let K be a number field and let $\mathcal{E}$ be an elliptic curve defined over $K$. Let $m$ be a positive integer. We denote by $K(\mathcal{E}[m])$ the number fields obtained by adding to $K$ the coordinates of the $m$-torsion points of $\mathcal{E}$. We look for small (sometimes "minimal") set of generators of $K(\mathcal{E}[m])$. For $m=3$ and $m=4$, we describe explicit generators, degree and Galois groups of the extensions $K(\mathcal{E}[m])/K$.

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Andrea Bandini, Laura Paladino. 2014-03-11. Fields generated by torsion points of elliptic curves. https://arxiv.org/abs/1403.2572

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