The intrinsic-limit conjecture for Laurent-deformed Calabi–Yau hypersurfaces

From papers

Let ZfZ_f be the closure or completion of a Laurent-deformed Calabi–Yau hypersurface obtained using the intrinsic-limit procedure, and let nn denote the number of torus factors. The resulting space is equipped with the indicated torus actions and equivariant (co)homology.

Intrinsic-limit conjecture. Laurent-deformed Calabi–Yau hypersurfaces closed or completed by the intrinsic limit are not algebraic varieties; they are toric spaces equipped with a maximal U(1)nU(1)^n-action and corresponding U(1)nU(1)^n- or fully U(1;C)nU(1;\mathbb{C})^n-equivariant (co)homology.

This proposes a geometric framework beyond ordinary algebraic geometry for the intrinsic-limit completion. The source gives no proof, so the claim remains open.

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Sources & referencesView supporting material

Primary source

Tristan Hübsch, “Beyond Algebraic Superstring Compactification”, arXiv:2502.08002 (2025).

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