Weakly special potential-density conjecture

Let XX be a weakly special variety over a number field KK. Here potentially dense integral points means that, after a finite extension of KK and enlarging a finite set of places, the integral points of a finite-type model are dense in XX.

Weakly Special Conjecture. If XX is a weakly special variety over a number field KK, then XX has a potentially dense set of integral points.

The conjecture is presented as the converse direction to the Lang–Vojta–Chevalley–Weil prediction. It is known in several cases, including abelian varieties, Enriques surfaces, and certain K3 surfaces and Calabi–Yau threefolds, but the source expects it to fail for some weakly special varieties.

Sources & referencesView supporting material

Primary source

Finn Bartsch and Ariyan Javanpeykar, “Weakly special varieties, Campana stacks, and Remarks on Orbifold Mordell”, arXiv:2603.28745 (2026).

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