Abelian Exponential-Algebraic Closedness conjecture

Let AA be a complex abelian variety of dimension gg, with exponential map

expA:CgA,\operatorname{exp}_A:\mathbb{C}^g\twoheadrightarrow A,

and let ΓexpA\Gamma_{\operatorname{exp}_A} be its graph. A subvariety VCg×AV\subseteq\mathbb{C}^g\times A is free and rotund as defined in the source: freeness excludes containment of either projection in the relevant translates of non-trivial abelian subvarieties, and rotundity requires dimπB(V)dim(A/B)\dim \pi_B(V)\geq\dim(A/B) for every abelian subvariety BAB\leq A.

Abelian Exponential-Algebraic Closedness conjecture. If VV is a free and rotund algebraic subvariety of Cg×A\mathbb{C}^g\times A, then

VΓexpA.V\cap\Gamma_{\operatorname{exp}_A}\neq\varnothing.

This is the abelian-variety analogue of Exponential-Algebraic Closedness for the complex exponential function. It is intended to imply quasiminimality for structures arising from abelian-variety exponentials, but the source says that the statement is implicit in Bays and Kirby rather than established here.

Sources & referencesView supporting material

Primary source

Francesco Gallinaro, “On Some Systems of Equations in Abelian Varieties”, arXiv:2206.14074 (2023).

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