Variational filtered log p-adic hard Lefschetz conjecture
Variational filtered log p-adic hard Lefschetz conjecture
Let be a proper SNCL scheme with structural morphism , and suppose that the relative dimension of is pure of dimension . Let be a relatively ample line bundle on , and let be its Chern class in . Write for the weight filtration. Variational filtered log -adic hard Lefschetz conjecture. For every , the cup product
is an isomorphism. In fact, it should be an isomorphism of filtered sheaves
where
This is a filtered, relative logarithmic crystalline analogue of the hard Lefschetz theorem. The supplied text attributes the conjecture to the author's earlier work and gives no evidence that it has been resolved.
Sources & referencesView supporting material
Primary source
Yukiyoshi Nakkajima, “Hirsch weight-filtered log crystalline complex and Hirsch weight-filtered log crystalline dga of a proper SNCL scheme in characteristic p>0”, arXiv:2012.12981 (2025).
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