Generalized Bloch conjecture for correspondences on surfaces
Generalized Bloch conjecture for correspondences on surfaces
Let be a smooth projective surface. Write for the group of homologically trivial zero-cycles modulo rational equivalence, and let
be the Albanese map. Define
For a -cycle , let be its induced cohomological action and let be its induced action on zero-cycles.
Generalized Bloch conjecture. If vanishes on , then vanishes on .
This extends the classical Bloch conjecture from surfaces to correspondences in products of surfaces. The assertion predicts that the cohomological vanishing of a correspondence on holomorphic two-forms forces its action to vanish on the Albanese kernel of zero-cycles; it remains open in general.
Progress summary
Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.
Sources & referencesView supporting material
Primary source
Sara Torelli, “Correspondences acting on constant cycle curves on K3 surfaces”, arXiv:2306.02723 (2025).
Additional references
2 papers in this index state this conjecture (2013–2023). The statement above is taken from the most recent of them; the others are arXiv:1311.0743.
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