Bloch's conjecture for strict Calabi–Yau manifolds

Let XX be a strict Calabi–Yau manifold of dimension nn, and let ωXH0(X,KX)\omega_X\in H^0(X,K_X) be a nowhere-zero top-degree holomorphic form. Let ZCHn(X×X)QZ\in CH^n(X\times X)_{\mathbb Q} be a self-correspondence such that [Z]ωX=0[Z]^*\omega_X=0. Bloch's conjecture for strict Calabi–Yau manifolds. For every zCH0(X)Q,homz\in CH_0(X)_{\mathbb Q,hom}, one has Zz=0Z_*z=0. This is the strict Calabi–Yau specialization of the generalized Bloch conjecture and is open in general.

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Primary source

Chenyu Bai, “Hodge theory, algebraic cycles of hyper-Kähler manifolds”, arXiv:2407.19488 (2024).

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