The Zilber–Pink conjecture for curves in powers of the modular curve

Let Y(1)Y(1) denote the modular curve, and let SY(1)nS\subset Y(1)^n be an irreducible curve that is not contained in a proper special subvariety of Y(1)nY(1)^n. For a special subvariety ZY(1)nZ\subset Y(1)^n, write codimZ\operatorname{codim} Z for its codimension. Zilber–Pink conjecture. The set

S(C)codimZ2Z(C)S(\mathbb{C})\cap \bigcup_{\operatorname{codim} Z\geq 2}Z(\mathbb{C})

is finite, where the union ranges over all special subvarieties ZZ of Y(1)nY(1)^n of codimension at least 22. This is the predicted finiteness of atypical intersections for curves in powers of the modular curve; the stated special case is open without additional assumptions on SS.

Sources & referencesView supporting material

Primary source

Georgios Papas, “Supersingular reduction and strongly special intersections in powers of the modular curve”, arXiv:2605.00766 (2026).

Additional references

38 papers in this index state this conjecture (2005–2026). The statement above is taken from the most recent of them; the others are arXiv:2603.20272, arXiv:2602.16433, arXiv:2512.04491, arXiv:2510.09603, arXiv:2507.16827, arXiv:2506.02900, arXiv:2504.00865, arXiv:2502.06366, arXiv:2502.03071, arXiv:2410.17755, arXiv:2406.16628, arXiv:2403.05481, and 25 more.

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