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We establish duality results for the cohomology of the Weil group of a $p$-adic field, analogous to, but more general than, results from Galois cohomology. We prove a duality theorem for discrete Weil modules, which implies Tate-Nakayama…

Number Theory · Mathematics 2012-05-30 David A. Karpuk

Let $C$ be a complete, algebraically closed non-archimedean extension of $\mathbb{Q}_p$, and $X$ be a proper rigid-analytic variety over $C$. We show that the category of pro-\'etale vector bundles on $X$ is equivalent to the category of…

Algebraic Geometry · Mathematics 2026-05-15 Hanlin Cai , Zeyu Liu

Lazard showed in his seminal work "Groupes analytiques $p$-adiques" that for rational coefficients continuous group cohomology of $p$-adic Lie-groups is isomorphic to Lie-algebra cohomology. We refine this result in two directions: firstly…

Number Theory · Mathematics 2019-02-20 Annette Huber , Guido Kings , Niko Naumann

We compare the Kummer flat (resp. Kummer etale) cohomology with the flat (resp. etale) cohomology with coefficients in smooth commutative group schemes, finite flat group schemes and the logarithmic multiplicative group of Kato. We will be…

Algebraic Geometry · Mathematics 2021-08-10 Heer Zhao

We prove equality of the various $p$-adic period morphisms for smooth, not necessarily proper, schemes. We start with showing that the $K$-theoretical uniqueness criterium we had found for proper smooth schemes extends to proper finite…

Number Theory · Mathematics 2019-11-19 Wiesława Nizioł

Let K be a finite extension of Q_p and X a smooth projective variety over K. We define the notion of totally degenerate reduction of such an X and the associated Chow complexes of the special fibre of a suitable regular proper model of X…

Algebraic Geometry · Mathematics 2007-05-23 Wayne Raskind , Xavier Xarles

In this expository article, we outline the theory of harmonic differential forms and its consequences. We provide self-contained proofs of the following important results in differential geometry: (1) Hodge theorem, which states that for a…

History and Overview · Mathematics 2022-10-17 Uzu Lim

In this note we give a p-adic proof of Hodge symmetry for smooth, projective threefolds over complex numbers.

Algebraic Geometry · Mathematics 2013-06-14 Kirti Joshi

The aim of this paper is to explain how to get a complex of smooth representations out of the dual vector space to a smooth representation of a p-adic Lie group, in natural characteristic. The construction does not depend on any…

Category Theory · Mathematics 2020-02-20 Leonid Positselski

This paper provides the technical tools needed in ongoing work of the authors to compute p-adic \'etale Abel-Jacobi maps in order to obtain explicit reciprocity laws for GSp4. In particular, we define and study syntomic polynomial…

Number Theory · Mathematics 2026-03-18 Fabrizio Andreatta , Massimo Bertolini , Marco Adamo Seveso , Rodolfo Venerucci

We show how to attach to any rigid analytic variety $V$ over a perfectoid space $P$ a rigid analytic motive over the Fargues-Fontaine curve $\mathcal{X}(P)$ functorially in $V$ and $P$. We combine this construction with the overconvergent…

Algebraic Geometry · Mathematics 2023-10-11 Arthur-César Le Bras , Alberto Vezzani

In order to study $p$-adic \'etale cohomology of an open subvariety $U$ of a smooth proper variety $X$ over a perfect field of characteristic $p>0$, we introduce new $p$-primary torsion sheaves. It is a modification of the logarithmic de…

Algebraic Geometry · Mathematics 2019-02-20 Uwe Jannsen , Shuji Saito , Yigeng Zhao

We compute the (stable) \'etale cohomology of $\mathrm{Hom}_{n}(C, \mathcal{P}(\vec{\lambda}))$, the moduli stack of degree $n$ morphisms from a smooth projective curve $C$ to the weighted projective stack $\mathcal{P}(\vec{\lambda})$, the…

Algebraic Geometry · Mathematics 2022-07-07 Oishee Banerjee , Jun-Yong Park , Johannes Schmitt

In this paper, we study a deformation theory of rigid analytic spaces. We develop a theory of cotangent complexes for rigid geometry which fits in with our deformations. We then use the complexes to give a cohomological description of…

Algebraic Geometry · Mathematics 2007-05-23 Isamu Iwanari

We survey some recent applications of p-adic cohomology to machine computation of zeta functions of algebraic varieties over finite fields of small characteristic, and suggest some new avenues for further exploration.

Number Theory · Mathematics 2007-05-23 Kiran S. Kedlaya

The theory of locally analytic representations of $p$-adic Lie groups with $\mathbf{Q}_p$-coefficients is a powerful tool in $p$-adic Hodge theory and in the $p$-adic Langlands program. This perspective reveals important differential…

Number Theory · Mathematics 2025-10-16 Gal Porat

We prove that, for adic \'{e}tale motives over $\mathbb{C}_p$, the vector bundles on the Fargues-Fontaine curve arising from their Hyodo-Kato cohomology coincide with their de Rham-Fargues-Fontaine cohomologies, where the latter provides an…

Algebraic Geometry · Mathematics 2025-09-23 Kaixing Cao

Nekovar and Niziol have introduced in [arxiv:1309.7620] a version of syntomic cohomology valid for arbitrary varieties over p-adic fields. This uses a mapping cone construction similar to the rigid syntomic cohomology of the first author in…

Number Theory · Mathematics 2018-02-15 Amnon Besser , David Loeffler , Sarah Livia Zerbes

In this article, we study and review some aspects of twisted cohomologies on algebraic and analytic varieties. We compared such cohomologies in both the algebraic and analytic categories and defined two types of twisting parameters in the…

Algebraic Geometry · Mathematics 2026-05-06 M. S. Islam , A. R. Mishkaat

We show that for a noetherian algebra $A$ whose bounded dg derived category is smooth, the singular Hochschild cohomology (=Tate--Hochschild cohomology) is isomorphic, as a graded algebra, to the Hochschild cohomology of the dg singularity…

Representation Theory · Mathematics 2020-09-10 Bernhard Keller