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We study a cohomology theory for rigid-analytic varieties over $\mathbb{C}_p$, without properness or smoothness assumptions, taking values in filtered quasi-coherent complexes over the Fargues-Fontaine curve, which compares to other…

Algebraic Geometry · Mathematics 2023-06-12 Guido Bosco

We extend Poincar\'e duality in \'etale cohomology from smooth schemes to regular ones. This is achieved via a formalism of trace maps for local complete intersection morphisms.

Algebraic Geometry · Mathematics 2024-09-24 Adeel A. Khan

We define an overconvergent version of the Hyodo-Kato complex for semistable varieties $Y$ over perfect fields of positive characteristic, and prove that its hypercohomology tensored with $\mathbb{Q}$ recovers the log-rigid cohomology when…

Algebraic Geometry · Mathematics 2020-06-25 Oliver Gregory , Andreas Langer

By adapting the Cheeger-Simons approach to differential cohomology, we establish a notion of differential cohomology with compact support. We show that it is functorial with respect to open embeddings and that it fits into a natural diagram…

Differential Geometry · Mathematics 2020-02-18 Christian Becker , Marco Benini , Alexander Schenkel , Richard J. Szabo

We prove a version of de Rham and Hyodo-Kato flip-flopping for dual towers of rigid analytic spaces including those coming from dual basic local Shimura varieties. The main tool are comparison theorems expressing the two cohomologies as…

Number Theory · Mathematics 2026-03-10 Gabriel Dospinescu , Wiesława Nizioł

Here we prove a Poincar\'e-Verdier duality theorem for the o-minimal sheaf cohomology with definably compact supports of definably normal, definably locally compact spaces in an arbitrary o-minimal structure.

Algebraic Geometry · Mathematics 2010-10-07 Mario J. Edmundo , Luca Prelli

Given an effective Cartier divisor D with simple normal crossing support on a smooth and proper scheme X over a perfect field of positive characteristic p, there is a natural notion of de Rham-Witt sheaves on X with zeros along D. We show…

Algebraic Geometry · Mathematics 2024-03-28 Fei Ren , Kay Rülling

We introduce a formalism of Hochschild (co)-homology for $\mathcal{D}$-cap modules on smooth rigid analytic spaces based on the homological tools of Ind-Banach $\mathcal{D}$-cap modules. We introduce several categories of $\mathcal{D}$-cap…

Number Theory · Mathematics 2026-02-10 Fernando Peña Vázquez

For having a Poincar\'e duality via a cap product between the intersection homology of a paracompact oriented pseudomanifold and the cohomology given by the dual complex, G. Friedman and J. E. McClure need a coefficient field or an…

Algebraic Topology · Mathematics 2018-02-01 David Chataur , Martintxo Saralegi-Aranguren , Daniel Tanré

For a conformally compact Poincar\'{e}-Einstein manifold $(X,g_+)$, we consider two types of compactifications for it. One is $\bar{g}=\rho^2g_+$, where $\rho$ is a fixed smooth defining function; the other is the adapted (including…

Differential Geometry · Mathematics 2021-06-04 Fang Wang , Huihuang Zhou

In this article, we introduce a new class of smooth partially proper rigid analytic varieties over a $p$-adic field that satisfy Poincar\'e duality for \'etale cohomology with mod $p$-coefficients : the varieties satisfying "primitive…

Algebraic Geometry · Mathematics 2026-01-01 Guillaume Pignon-Ywanne

Under certain hypotheses, we prove a loop space decomposition for simply-connected Poincar\'e Duality complexes of dimension $n$ whose $(n-1)$-skeleton is a co-$H$-space. This unifies many known decompositions obtained in different contexts…

Algebraic Topology · Mathematics 2025-06-17 Lewis Stanton , Stephen Theriault

The aim of this note is to prove the analogue of Poincar\'e duality in the chiral Hodge cohomology.

Algebraic Geometry · Mathematics 2009-09-25 Fyodor Malikov , Vadim Schechtman

In this paper, we construct a monoidal weight structure on the stable $\infty$-category of rigid analytic motives over a local field $K$ via Galois descent. This extends the weight structure on the full subcategory of rigid analytic motives…

Algebraic Geometry · Mathematics 2025-09-23 Kaixing Cao

We introduce a space of stable meromorphic differentials with poles of prescribed orders and define its tautological cohomology ring. This space, just as the space of holomorphic differentials, is stratified according to the set of…

Algebraic Geometry · Mathematics 2019-06-05 Adrien Sauvaget

We build a unified framework for the study of monodromy operators and weight filtrations of cohomology theories for varieties over a local field. As an application, we give a streamlined definition of Hyodo-Kato cohomology without recourse…

Algebraic Geometry · Mathematics 2025-07-11 Federico Binda , Martin Gallauer , Alberto Vezzani

Poincare duality lies at the heart of the homological theory of manifolds. In the presence of the action of a group it is well-known that Poincare duality fails in Bredon's ordinary, integer-graded equivariant homology. We give here a…

Algebraic Topology · Mathematics 2013-12-03 Steven R. Costenoble , Stefan Waner

For G an almost-connected Lie group, we study G-equivariant index theory for proper co-compact actions with various applications, including obstructions to and existence of G-invariant Riemannian metrics of positive scalar curvature. We…

K-Theory and Homology · Mathematics 2020-02-06 Hao Guo , Varghese Mathai , Hang Wang

In this paper, we study the cohomology of semisimple local systems in the spirit of classical Hodge theory. On the one hand, we establish a generalization of Hodge-Riemann bilinear relations. For a semisimple local system on a smooth…

Algebraic Geometry · Mathematics 2024-12-13 Chuanhao Wei , Ruijie Yang

A well-known and old result of Hazewinkel and Koszul states that the cohomology of a finite-dimensional Lie algebra is isomorphic, up to a suitable shift, to its twisted homology, a Lie-theoretical version of Poincare duality. This paper…

Quantum Algebra · Mathematics 2026-01-26 Andrey Lazarev , Rong Tang