On the explicit Torsion Anomalous Conjecture

Checcoli, S.; Veneziano, F.; Viada, E.

doi:10.1090/tran/6893

On the explicit Torsion Anomalous Conjecture
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by S. Checcoli, F. Veneziano and E. Viada PDF

Trans. Amer. Math. Soc. 369 (2017), 6465-6491 Request permission

Abstract:

The Torsion Anomalous Conjecture states that an irreducible variety $V$ embedded in a semi-abelian variety contains only finitely many maximal $V$-torsion anomalous varieties. In this paper we consider an irreducible variety embedded in a product of elliptic curves. Our main result provides a totally explicit bound for the Néron-Tate height of all maximal $V$-torsion anomalous points of relative codimension one in the non-CM case, and an analogous effective result in the CM case. As an application, we obtain the finiteness of such points. In addition, we deduce some new explicit results in the context of the effective Mordell-Lang Conjecture; in particular we bound the Néron-Tate height of the rational points of an explicit family of curves of increasing genus.

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