English

On the cyclic torsion of elliptic curves over cubic number fields

Number Theory 2017-03-23 v7

Abstract

Let EE be an elliptic defined over a number field KK. Then its Mordell-Weil group E(K)E(K) is finitely generated: E(K)E(K)tor×ZrE(K)\cong E(K)_{tor}\times\mathbb{Z}^r. In this paper, we discuss the cyclic torsion subgroup of elliptic curves over cubic number fields. For N=169,143,91,65,77N=169,143,91,65,77 or 5555, we show that Z/NZ\mathbb{Z}/N\mathbb{Z} is not a subgroup of E(K)torE(K)_{tor} for any elliptic curve EE over a cubic number field KK.

Keywords

Cite

@article{arxiv.1502.06873,
  title  = {On the cyclic torsion of elliptic curves over cubic number fields},
  author = {Jian Wang},
  journal= {arXiv preprint arXiv:1502.06873},
  year   = {2017}
}