Infinite rank of elliptic curves over ${\mathbb{Q}}^{\mathrm{ab}}$

Bo-Hae Im¹ ; Michael Larsen²

¹ Department of Mathematics Chung-Ang University 221 Heukseok-dong, Dongjak-gu Seoul, 156-756, South Korea
² Department of Mathematics Indiana University Bloomington, IN 47405, U.S.A.

Acta Arithmetica, Tome 158 (2013) no. 1, pp. 49-59.

Résumé

If $E$ is an elliptic curve defined over a quadratic field $K$, and the $j$-invariant of $E$ is not $0$ or $1728$, then $E({\mathbb{Q}}^{\mathrm{ab}})$ has infinite rank. If $E$ is an elliptic curve in Legendre form, $y^2=x(x-1)(x-\lambda )$, where $\mathbb{Q}(\lambda )$ is a cubic field, then $E(K{\mathbb{Q}}^{\mathrm{ab}})$ has infinite rank. If $\lambda \in K$ has a minimal polynomial $P(x)$ of degree $4$ and $v^2=P(u)$ is an elliptic curve of positive rank over $\mathbb{Q}$, we prove that $y^2=x(x-1)(x-\lambda )$ has infinite rank over $K{\mathbb{Q}}^{\mathrm{ab}}$.

Détail

DOI : 10.4064/aa158-1-3

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