Explicit Small Height Bound for $Q(E_\text{tor})$

Vendredi, 6. avril 2018 - 14:00 - 15:00
Orateur: 

Linda Frey (Bâle)

Résumé: 

Let $E$ be an elliptic curve defined over $\mathbb{Q} $. We will show that there exists an explicit constant $C$ which is only dependent on the conductor and the $j-$invariant of $E$ such that the absolute logarithmic Weil height of an $\alpha \in \mathbb{Q} (E_\text{tor})^*\setminus \mu_\infty$ is always greater than $C$ where $E_\text{tor}$ denotes all the torsion points of $E$ and $\mu_\infty$ are the roots of unity.