Lang's conjecture for intersections with finite-rank subgroups

From papers

Let AA be a complex abelian variety, let Γ\Gamma be a subgroup of finite rank in A(C)A(\mathbb{C}), and let XX be a subvariety of AA. Here X(C)Γ\overline{X(\mathbb{C}) \cap \Gamma} denotes the Zariski closure of X(C)ΓX(\mathbb{C}) \cap \Gamma. Lang's conjecture. There are abelian subvarieties C1,,CnC_1, \ldots, C_n of AA and elements γ1,,γnΓ\gamma_1, \ldots, \gamma_n \in \Gamma such that

X(C)Γ=i=1n(Ci+γi)\overline{X(\mathbb{C}) \cap \Gamma} = \bigcup_{i=1}^n (C_i + \gamma_i)

and

X(C)Γ=i=1n(Ci(C)+γi)Γ.X(\mathbb{C}) \cap \Gamma = \bigcup_{i=1}^n (C_i(\mathbb{C}) + \gamma_i) \cap \Gamma.

The statement is presented as the absolute form of Lang's conjecture and is substantially included in the theorem proved immediately before it; the source does not provide an independent status discussion for this formulation.

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Sources & referencesView supporting material

Primary source

Atsushi Moriwaki, “A generalization of conjectures of Bogomolov and Lang over finitely generated fields”, arXiv:math/9908092 (1999).

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