The conjecture on intersections of subvarieties with tori

Let nNn\in \mathbb{N}, let WGmnW\subseteq \mathbb{G}_{\mathrm{m}}^n be an irreducible subvariety, and let WatypW^{\mathrm{atyp}} denote the union of the atypical components of WHW\cap H over all algebraic subgroups HGmnH\subseteq \mathbb{G}_{\mathrm{m}}^n. A component XX of WHW\cap H is atypical when

dimX>dimW+dimHn.\dim X>\dim W+\dim H-n.

The conjecture on intersections of subvarieties with tori. For every nNn\in\mathbb{N} and every irreducible subvariety WGmnW\subseteq\mathbb{G}_{\mathrm{m}}^n, the set WatypW^{\mathrm{atyp}} is a proper Zariski-closed subset of WW.

This is a diophantine conjecture about atypical, also called anomalous or unlikely, intersections of varieties with algebraic subgroups of tori. The supplied source does not state whether the conjecture has been resolved.

Sources & referencesView supporting material

Primary source

Jonathan Kirby and Boris Zilber, “Exponentially Closed Fields and the Conjecture on Intersections with Tori”, arXiv:1108.1075 (2014).

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