Bloch–Beilinson's correspondence conjecture for Albanese kernels

Let SS and TT be smooth projective surfaces. Let ΓCH2(S×T)\Gamma\in\mathrm{CH}^2(S\times T) be a codimension-22 cycle, and let

[Γ]:H2,0(T)H2,0(S)[\Gamma]^*:H^{2,0}(T)\longrightarrow H^{2,0}(S)

be the induced map. Define CH0(S)alb\mathrm{CH}_0(S)_{\mathrm{alb}} and CH0(T)alb\mathrm{CH}_0(T)_{\mathrm{alb}} as the kernels of their respective Albanese maps on degree-zero zero-cycles. Bloch–Beilinson's correspondence conjecture. If [Γ]=0[\Gamma]^*=0, then

Γ:CH0(S)albCH0(T)alb\Gamma_*:\mathrm{CH}_0(S)_{\mathrm{alb}}\longrightarrow\mathrm{CH}_0(T)_{\mathrm{alb}}

vanishes. This generalizes Bloch's conjecture and expresses the predicted action of correspondences on the Albanese-kernel part of the Chow group. The source gives no resolution.

Sources & referencesView supporting material

Primary source

Jiabin Du and Wenfei Liu, “On symplectic automorphisms of a surface with genus two fibration and their action on CH_0”, arXiv:2501.10058 (2025).

Additional references

2 papers in this index state this conjecture (2021–2025). The statement above is taken from the most recent of them; the others are arXiv:2103.03052.

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