English

Mordell-Weil group as Galois modules

Number Theory 2025-09-09 v2

Abstract

We study the action of the Galois group GG of a finite extension K/kK/k of number fields on the points on an elliptic curve EE. For an odd prime pp, we aim to determine the structure of the pp-adic completion of the Mordell-Weil group E(K)E(K) as a Zp[G]\mathbb{Z}_p[G]-module only using information of EE over kk and the completions of KK.

Keywords

Cite

@article{arxiv.2306.13365,
  title  = {Mordell-Weil group as Galois modules},
  author = {Thomas Vavasour and Christian Wuthrich},
  journal= {arXiv preprint arXiv:2306.13365},
  year   = {2025}
}
R2 v1 2026-06-28T11:12:36.569Z