Trivial-action conjecture for automorphisms of surfaces

Let SS be a smooth projective surface, and let GAut(S)G\subset\mathrm{Aut}(S) be a group of automorphisms. Assume that every element of GG acts trivially on H2,0(S)H^{2,0}(S). Trivial-action conjecture. Then GG acts trivially on

CH0(S)alb.\mathrm{CH}_0(S)_{\mathrm{alb}}.

This is obtained in the source from the correspondence conjecture by taking the difference between an automorphism's graph and the diagonal. The supplied text does not state whether it has been resolved.

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).

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