The Section Property for holomorphic symplectic varieties

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Let XX be a smooth projective holomorphic symplectic variety. Write CH⁡(X)\operatorname{CH}(X) for its Chow ring with rational coefficients and CH⁡‾(X)\overline{\operatorname{CH}}(X) for the quotient by numerical equivalence. Section Property. The \mathdsQ\mathds{Q}-algebra epimorphism

CH⁡(X)↠CH⁡‾(X)\operatorname{CH}(X)\twoheadrightarrow\overline{\operatorname{CH}}(X)

admits a section as \mathdsQ\mathds{Q}-algebras whose image contains the Chern classes of XX. This is a consequence expected from the splitting of the Bloch--Beilinson filtration; it is established for abelian varieties but remains open in the stated holomorphic symplectic setting.

References

Primary source

Lie Fu and Charles Vial, “Distinguished cycles on varieties with motive of abelian type and the Section Property”, arXiv:1709.05644 (2019).

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