Intersection-product conjecture for odd-dimensional or Calabi–Yau hypersurfaces

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Let X⊂Pn+1(C)X\subset\mathbb{P}^{n+1}(\mathbb{C}) be a smooth hypersurface. Assume that either the dimension nn is odd, or the degree of XX is n+2n+2, so that XX is Calabi–Yau. Intersection-product conjecture.

Ai(X)⋅Aj(X)=Q[hi+j]for all i,j>0.A^i(X)\cdot A^{j}(X)=\mathbb{Q}[h^{i+j}]\quad\text{for all }i,j>0.

This conjecture combines Voisin's theorem for Calabi–Yau hypersurfaces with the preceding product conjecture. Its general validity is not established in the source.

References

Primary source

Robert Laterveer, “Questions on the Chow ring of complete intersections”, arXiv:2512.06430 (2025).

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