English

Torsion of rational elliptic curves over different types of cubic fields

Number Theory 2020-07-09 v1

Abstract

Let EE be an elliptic curve defined over \Q\Q, and let GG be the torsion group E(K)torsE(K)_{tors} for some cubic field KK which does not occur over \Q\Q. In this paper, we determine over which types of cubic number fields (cyclic cubic, non-Galois totally real cubic, complex cubic or pure cubic) GG can occur, and if so, whether it can occur infinitely often or not. Moreover, if it occurs, we provide elliptic curves E/\QE/\Q together with cubic fields KK so that G=E(K)torsG= E(K)_{tors}.

Keywords

Cite

@article{arxiv.1912.07159,
  title  = {Torsion of rational elliptic curves over different types of cubic fields},
  author = {Daeyeol Jeon and Andreas Schweizer},
  journal= {arXiv preprint arXiv:1912.07159},
  year   = {2020}
}

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15 pages