English

Approximation forte sur un produit de vari\'et\'es ab\'eliennes \'epoint\'e en des points de torsion

Number Theory 2019-01-09 v2 Algebraic Geometry

Abstract

Consider strong approximation for algebraic varieties defined over a number field kk. Let SS be a finite set of places of kk containing all archimedean places. Let EE be an elliptic curve of positive Mordell-Weil rank and let AA be an abelian variety of positive dimension and of finite Mordell-Weil group. For an arbitrary finite set T\mathfrak{T} of torsion points of E×AE\times A, denote by XX its complement. Supposing the finiteness of Sha(E×A)Sha(E\times A), we prove that XX satisfies strong approximation with Brauer-Manin obstruction off SS if and only if the projection of T\mathfrak{T} to AA contains no kk-rational points.

Keywords

Cite

@article{arxiv.1901.00118,
  title  = {Approximation forte sur un produit de vari\'et\'es ab\'eliennes \'epoint\'e en des points de torsion},
  author = {Yongqi Liang},
  journal= {arXiv preprint arXiv:1901.00118},
  year   = {2019}
}

Comments

Comments are welcome. Written in french, with an English abstract