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Let X be the third exterior power of a six-dimensional complex vector space, equipped with the natural action of the group GL_6(C) of invertible linear transformations of C^6. We describe explicitly the category of GL_6(C)-equivariant…

Commutative Algebra · Mathematics 2019-11-26 András C. Lőrincz , Michael Perlman

The theory of reciprocity sheaves due to Kahn-Saito-Yamazaki is a powerful framework to study invariants of smooth varieties via invariants of pairs $(X,D)$ of a variety $X$ and a divisor $D$. We develop a generalization of this theory…

Algebraic Geometry · Mathematics 2024-01-01 Junnosuke Koizumi , Hiroyasu Miyazaki

In this article, I define triangulated categories of constructible isocrystals on varieties over a perfect field of positive characteristic, in which Le Stum's abelian category of constructible isocrystals sits as the heart of a natural…

Algebraic Geometry · Mathematics 2023-04-17 Christopher Lazda

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

This paper is an exposition of the completion of a modular group with respect to its inclusion into SL_2(Q) and the connection with the theory of modular forms and variations of mixed Hodge structure over modular curves. Among the goals of…

Algebraic Geometry · Mathematics 2015-07-14 Richard Hain

We formalize, at the level of D-modules, the notion that A-hypergeometric systems are equivariant versions of the classical hypergeometric equations. For this purpose, we construct a functor on a suitable category of torus equivariant…

Algebraic Geometry · Mathematics 2018-06-13 Christine Berkesch , Laura Felicia Matusevich , Uli Walther

We develop the moduli theory of boundary polarized CY pairs, which are slc Calabi-Yau pairs $(X,D)$ such that $D$ is ample. The motivation for studying this moduli problem is to construct a moduli space at the Calabi-Yau wall interpolating…

Algebraic Geometry · Mathematics 2023-07-14 Kenneth Ascher , Dori Bejleri , Harold Blum , Kristin DeVleming , Giovanni Inchiostro , Yuchen Liu , Xiaowei Wang

In this article we give a survey of homology computations for moduli spaces $\mathfrak{M}_{g,1}^m$ of Riemann surfaces with genus $g\geqslant 0$, one boundary curve, and $m\geqslant 0$ punctures. While rationally and stably this question…

Algebraic Topology · Mathematics 2022-09-20 Carl-Friedrich Bödigheimer , Felix Boes , Florian Kranhold

This paper solves the global moduli problem for regular holonomic D-modules with normal crossing singularities on a nonsingular complex projective variety. This is done by introducing a level structure (which gives rise to…

alg-geom · Mathematics 2008-02-03 Nitin Nitsure

Given a rigid tensor-triangulated category and a vector space valued homological functor for which the K\"{u}nneth isomorphism holds, we construct a universal graded-Tannakian category through which the given homological functor factors. We…

Algebraic Geometry · Mathematics 2020-01-24 Daniel Schäppi

Let $R,S$ be rings, $\mathcal{X}\subseteq \text{mod}$-$R$ a covariantly finite subcategory, $\mathcal{C}$ the smallest definable subcategory of $\text{Mod}$-$R$ containing $\mathcal{X}$ and $\mathcal{D}$ a definable subcategory of…

Representation Theory · Mathematics 2024-12-19 Lorna Gregory

Milne's correcting factor, which appears in the Zeta-value at $s=n$ of a smooth projective variety $X$ over a finite field $\mathbb{F}_q$, is the Euler characteristic of the derived de Rham cohomology of $X/\mathbb{Z}$ modulo the Hodge…

Number Theory · Mathematics 2016-10-26 Baptiste Morin

In this work, we develop a new theory of multivariate V-filtration on D-modules along a simple normal crossing divisor and relate it with Sabbah's multi-filtration. We establish several new structural results and relate them with the Hodge…

Algebraic Geometry · Mathematics 2026-05-28 Dougal Davis , Ruijie Yang

Let $X$ be a smooth projective curve of genus $g \geq 2$ and $M$ be the moduli space of rank 2 stable vector bundles on $X$ whose determinants are isomorphic to a fixed odd degree line bundle $L$. There has been a lot of works studying the…

Algebraic Geometry · Mathematics 2021-06-10 Kyoung-Seog Lee , M. S. Narasimhan

Let X be a separated scheme of finite type over a field k and D a non-reduced effective Cartier divisor on it. We attach to the pair (X, D) a cycle complex with modulus, whose homotopy groups - called higher Chow groups with modulus -…

Algebraic Geometry · Mathematics 2019-10-23 Federico Binda , Shuji Saito

In this paper we study the question of how to transfer homotopic structure from the category sD of simplicial objects in a fixed category D to D. To this end we use a sort of homotopy colimit s : sD --> D, which we call simple functor. For…

Algebraic Geometry · Mathematics 2011-10-12 Beatriz Rodriguez Gonzalez

For a morphism of smooth schemes over a regular affine base we define functors of derived direct image and extraordinary inverse image on coderived categories of DG-modules over de Rham DG-algebras. Positselski proved that for a smooth…

Algebraic Geometry · Mathematics 2013-12-02 Sergey Rybakov

We introduce the motivic coniveau exact couple of a smooth scheme, in the framework of mixed motives, whose property is to universally give rise to coniveau spectral sequences through realizations. The main result is a computation of its…

Algebraic Geometry · Mathematics 2011-06-07 F. Déglise

Zagier observed that modular Nahm sums associated with the same matrix may form a vector-valued modular function on some congruence subgroup. We establish modular transformation formulas for several families of Nahm sums by viewing them as…

Number Theory · Mathematics 2024-12-25 Liuquan Wang , Huohong Zhang

We give an algebraic description of several modules and algebras related to the vector partition function, and we prove that they can be realized as the equivariant K-theory of some manifolds that have a nice combinatorial description. We…

K-Theory and Homology · Mathematics 2015-09-30 Francesco Cavazzani , Luca Moci
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