In mathematics, crystalline cohomology is a Weil cohomology theory for schemes X over a base field k. Its values H (X/W) are modules over the ring W of Witt vectors over k. It was introduced by Alexander Grothendieck (1966, 1968) and developed by Pierre Berthelot (1974). Crystalline cohomology is partly inspired … See more For schemes in characteristic p, crystalline cohomology theory can handle questions about p-torsion in cohomology groups better than p-adic étale cohomology. This makes it a natural backdrop for much of the work on See more One idea for defining a Weil cohomology theory of a variety X over a field k of characteristic p is to 'lift' it to a variety X* over the ring of Witt vectors of k (that gives back X on See more If X is a scheme over S then the sheaf OX/S is defined by OX/S(T) = coordinate ring of T, where we write T as an abbreviation for an … See more For a variety X over an algebraically closed field of characteristic p > 0, the $${\displaystyle \ell }$$-adic cohomology groups for $${\displaystyle \ell }$$ any prime number other than p give satisfactory cohomology groups of X, with coefficients in the ring See more In characteristic p the most obvious analogue of the crystalline site defined above in characteristic 0 does not work. The reason is roughly that in order to prove exactness of the de Rham complex, one needs some sort of Poincaré lemma, whose proof in turn … See more • Motivic cohomology • De Rham cohomology See more WebAmong the open issues mentioned in Illusie's survey are finiteness theorems, crystalline coefficients, geometric semistability, the identity of characteristic polynomials of the …
Luc Illusie - Université Paris-Saclay
WebJul 12, 2024 · If you want to understand crystalline cohomology in the concrete possible way, you probably want to read about Dieudonne modules. Perhaps the Demazure reference in the linked question is a good place to start. – Will Sawin Jul 13, 2024 at 11:14 Add a comment 1 Answer Sorted by: 2 mass spec with chlorine
Exposé V : Semi-stable reduction and crystalline cohomology …
Web1 Answer. To add a bit more to Brian's comment: the crystalline cohomology of an abelian variety (over a finite field of characteristic p, say) is canonically isomorphic to the Dieudonné module of the p-divisible group of the abelian variety (which is a finite free module over the Witt vectors of the field with a semi-linear Frobenius). WebAug 1, 1999 · In this text the author uses stack-theoretic techniques to study the crystalline structure on the de Rham cohomology of a proper smooth scheme over a p-adic field and applications to p-adic Hodge … Expand Webtions on crystalline cohomology instead of De Rham cohomology. These filtrations, which we denote again by F Hdg and F con, are (very nearly) p-good (1.1), and a simple abstract construction attaches to any W-module H with a p-good filtration F: v a W-module with an abstract p-good conjugate filtration (H , F ) v an abstract F-span 8 hyfe flour