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Related papers: Sharp de Rham realization

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We study the homology of the dual de Rham complex as functors on the category of abelian groups. We give a description of homology of the dual de Rham complex up to degree 7 for free abelian groups and present a corrected version of the…

Algebraic Topology · Mathematics 2010-01-19 Roman Mikhailov

We investigate deformations of lagrangian manifolds with singularities. We introduce a complex similar to the de Rham-complex whose cohomology calculates deformation spaces. Examples of singular lagrangian varieties are presented and…

Algebraic Geometry · Mathematics 2007-05-23 Duco van Straten , Christian Sevenheck

In this work, merging ideas from compatible discretisations and polyhedral methods, we construct novel fully discrete polynomial de Rham sequences of arbitrary degree on polygons and polyhedra. The spaces and operators that appear in these…

Numerical Analysis · Mathematics 2021-05-18 Daniele A. Di Pietro , Jérôme Droniou , Francesca Rapetti

In order to have cohomological operations for de Rham p-adic cohomology with coefficients as manageable as possible, the main purpose of this paper is to solve intrinsically and from a cohomological point of view the lifting problem of…

Algebraic Geometry · Mathematics 2010-09-17 Alberto Dario Arabia , Zoghman Mebkhout

The purpose of this paper is to present a ``Cech-De Rham'' model for the cohomology of leaf spaces. This model lends itself to the construction of characteristic classes (in the cohomology of classifying spaces) by explicit geometrical…

Differential Geometry · Mathematics 2007-05-23 Marius Crainic , Ieke Moerdijk

In this paper, we prove compatibilities of various definitions of relatively unipotent log de Rham fundamental groups for certain proper log smooth integral morphisms of fine log schemes of characteristic zero. Our proofs are purely…

Number Theory · Mathematics 2020-09-23 Bruno Chiarellotto , Valentina Di Proietto , Atsushi Shiho

The saturated de Rham-Witt complex, introduced by Bhatt-Lurie-Mathew in arXiv:1805.05501, is a variant of the classical de Rham-Witt complex which is expected to behave better for singular schemes. We provide partial justification for this…

Algebraic Geometry · Mathematics 2025-12-15 Ravi Fernando

We associate to a multiple polylogarithm a holomorphic 1-form on the universal abelian cover of its domain. We relate the 1-forms to the symbol and variation matrix and show that the 1-forms naturally define a lift of the variation of mixed…

K-Theory and Homology · Mathematics 2023-02-08 Zachary Greenberg , Dani Kaufman , Haoran Li , Christian K. Zickert

Homology with values in a connection with possibly irregular singular points on an algebraic curve is defined, generalizing homology with values in the underlying local system for a connection with regular singular points. Integration…

Algebraic Geometry · Mathematics 2007-05-23 Spencer Bloch , Hélène Esnault

We introduce Hochschild (co-)homology of morphisms of schemes or analytic spaces and study its fundamental properties. In analogy with the cotangent complex we introduce the so called (derived) Hochschild complex of a morphism; the…

Algebraic Geometry · Mathematics 2007-05-23 R. -O. Buchweitz , H. Flenner

In this paper and its sequel we consider locally-free $\mathscr{O}_X$-modules together with a connection over a quasi-smooth Berkovich curve $X$. We obtain necessary and sufficient conditions for the finite dimensionality of their de Rham…

Number Theory · Mathematics 2024-11-22 Jérôme Poineau , Andrea Pulita

We introduce new motivic invariants of arbitrary varieties over a perfect field. These cohomological invariants take values in the category of one-motives (considered up to isogeny in positive characteristic). The algebraic definition of…

Algebraic Geometry · Mathematics 2015-06-29 Niranjan Ramachandran

We develop an explicit algebriac de Rham theory for relative completion of $\mathrm{SL}_2(\mathbb{Z})$. This allows the construction of iterated integrals involving modular forms of the second kind, generalizing iterated integrals of…

Number Theory · Mathematics 2019-08-20 Ma Luo

We introduce the notion of integrable connections for a sheaf of differential graded algebras on a topological space. We then describe them in the finite locally projective setting, when the sheaf is either the de Rham complex of a formal…

Algebraic Geometry · Mathematics 2025-02-05 Rubén Muñoz--Bertrand

Let $X$ be any subanalytic compact pseudomanifold. We show a De Rham theorem for $L^\infty$ forms. We prove that the cohomology of $L^\infty$ forms is isomorphic to intersection cohomology in the maximal perversity.

Algebraic Geometry · Mathematics 2012-07-09 Guillaume Valette

Let $X=\C^n$. In this paper we present an algorithm that computes the de Rham cohomology groups $H^i_{dR}(U,\C)$ where $U$ is the complement of an arbitrary Zariski-closed set $Y$ in $X$. Our algorithm is a merger of the algorithm given by…

Algebraic Geometry · Mathematics 2007-05-23 Uli Walther

We define complex cobordism realizations of cohomological Thom polynomials and study their existence, uniqueness and other features. We show that problem is non-trivial on the example of $\Sigma^1$ singularity.

Algebraic Topology · Mathematics 2007-05-23 Andrei Kustarev

We introduce a cohomology theory of grading-restricted vertex algebras. To construct the {\it correct} cohomologies, we consider linear maps from tensor powers of a grading-restricted vertex algebra to "rational functions valued in the…

Quantum Algebra · Mathematics 2013-11-01 Yi-Zhi Huang

The main object of study of this paper is the notion of a LieDer pair, i.e. a Lie algebra with a derivation. We introduce the concept of a representation of a LieDer pair and study the corresponding cohomologies. We show that a LieDer pair…

Representation Theory · Mathematics 2019-08-06 Rong Tang , Yael Fregier , Yunhe Sheng

We begin by reviewing the definition of 3-Lie algebras and the fundamental concepts of matched pairs. Subsequently, we introduce the representation theory of matched pairs and define the semidirect product. Building on this foundation, we…

Rings and Algebras · Mathematics 2025-09-24 Tao Zhang , Jingzi Zhang