The Section Property for holomorphic symplectic varieties

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.

Sources & referencesView supporting material

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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