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arXiv · 1109.5859

Small Height and Infinite Non-Abelian Extensions

Philipp Habegger
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Abstract

Let $E$ be an elliptic curve defined over the rationals without complex multiplication. The field $F$ generated by all torsion points of $E$ is an infinite, non-abelian Galois extension of the rationals which has unbounded, wild ramification above all primes. We prove that the absolute logarithmic Weil height of an element of $F$ is either zero or bounded from below by a positive constant depending only on $E$. We also show that the N\'eron-Tate height has a similar gap on $E(F)$ and use this to determine the structure of the group $E(F)$.

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Philipp Habegger. 2011-09-27. Small Height and Infinite Non-Abelian Extensions. https://doi.org/10.1215/00127094-2331342

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