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.
References
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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