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We describe the Tate resolution of a coherent sheaf or complex of coherent sheaves on a product of projective spaces. Such a resolution makes explicit all the cohomology of all twists of the sheaf, including, for example, the multigraded…

Algebraic Geometry · Mathematics 2018-04-30 David Eisenbud , Daniel Erman , Frank-Olaf Schreyer

Using derived categories of equivariant coherent sheaves we construct a knot homology theory which categorifies the quantum sl(m) knot polynomial. Our knot homology naturally satisfies the categorified MOY relations and is conjecturally…

Algebraic Geometry · Mathematics 2015-05-13 Sabin Cautis , Joel Kamnitzer

A semiorthogonal decomposition for the bounded derived category (the category of perfect complexes in a non smooth case) of coherent sheaves on a Brauer Severi scheme is given. It relies on bounded derived categories (categories of perfect…

Algebraic Geometry · Mathematics 2007-05-23 Marcello Bernardara

We show how the notion of the transcendence degree of a zero-cycle on a smooth projective variety X is related to the structure of the motive M(X). This can be of particular interest in the context of Bloch's conjecture, especially for…

Algebraic Geometry · Mathematics 2015-05-12 Sergey Gorchinskiy , Vladimir Guletskii

We construct and study a triangulated category of motives with modulus $\mathbf{MDM}_{\mathrm{gm}}^{\mathrm{eff}}$ over a field $k$ that extends Voevodsky's category $\mathbf{DM}_{\mathrm{gm}}^{\mathrm{eff}}$ in such a way as to encompass…

Algebraic Geometry · Mathematics 2019-03-05 Bruno Kahn , Shuji Saito , Takao Yamazaki

We develop a version of Hodge theory for a large class of smooth formally proper quotient stacks $X/G$ analogous to Hodge theory for smooth projective schemes. We show that the noncommutative Hodge-de Rham sequence for the category of…

Algebraic Geometry · Mathematics 2022-02-08 Daniel Halpern-Leistner , Daniel Pomerleano

In this paper we prove Homological Projective Duality for crepant categorical resolutions of several classes of linear determinantal varieties. By this we mean varieties that are cut out by the minors of a given rank of a n x m matrix of…

Algebraic Geometry · Mathematics 2016-04-12 Marcello Bernardara , Michele Bolognesi , Daniele Faenzi

We construct generalized Weyman complexes for coherent sheaves on projective space and describe explicitly how the differential depend on the differentials in the correpsonding Tate resolution. We apply this to define the Weyman complex of…

Algebraic Geometry · Mathematics 2009-07-21 David Cox , Evgeny Materov

We continue the work initiated in arXiv:1206.3645, where we introduced a new stable symmetric monoidal $(\infty,1)$-category $SH_{nc}$ encoding a motivic stable homotopy theory for the noncommutative spaces of Kontsevich and obtained a…

K-Theory and Homology · Mathematics 2013-06-18 Marco Robalo

In this paper we construct a tilting sheaf for Severi-Brauer Varieties and Involution Varieties. This sheaf relates the derived category of each variety to the derived category of modules over a ring whose semisimple component consists of…

Algebraic Geometry · Mathematics 2012-04-04 Mark Blunk

Let $\mathcal C$ be closed symmetric monoidal Grothendieck category. We define the pure derived category with respect to the monoidal structure via a relative injective model category structure on the category $\mathbf{C}(\mathcal C)$ of…

Category Theory · Mathematics 2014-08-14 Sergio Estrada , James Gillespie , Sinem Odabaşi

In this short paper we prove a derived version of the Riemann-Hilbert correspondence of Deligne and Simpson. Our generalization is twofold: on one side we consider families of representations of the full homotopy type of a smooth analytic…

Algebraic Geometry · Mathematics 2017-03-14 Mauro Porta

We investigate the properties of pure derived categories of module categories, and show that pure derived categories share many nice properties of classical derived categories. In particular, we show that bounded pure derived categories can…

Representation Theory · Mathematics 2016-01-28 Yuefei Zheng , Zhaoyong Huang

We construct a surjective homomorphism from Somekawa's K-group associated to a finite collection of semi-abelian varieties over a perfect field to a corresponding Hom group in Voevodsky's triangulated category of effective motivic…

Algebraic Geometry · Mathematics 2010-09-24 Bruno Kahn

Given a smooth projective toric variety $X_\Sigma$ of complex dimension $n$, Fang-Liu-Treumann-Zaslow \cite{FLTZ} showed that there is a quasi-embedding of the differential graded (dg) derived category of coherent sheaves $Coh(X_\Sigma)$…

Algebraic Geometry · Mathematics 2017-01-04 Peng Zhou

Kazhdan and Lusztig identified the affine Hecke algebra $\mathcal{H}$ with an equivariant $K$-group of the Steinberg variety, and applied this to prove the Deligne-Langlands conjecture, i.e., the local Langlands parametrization of…

Representation Theory · Mathematics 2024-05-28 David Ben-Zvi , Harrison Chen , David Helm , David Nadler

Let $G$ be a semi-simple algebraic group over a perfect field $k$. A lot of progress has been made recently in computing the Chow motives of projective $G$-homogenous varieties. When $k$ has positive characteristic, a broader class of…

Algebraic Geometry · Mathematics 2017-10-20 Srimathy Srinivasan

We give two proofs to the following theorem and its generalization: if a finite dimensional algebra $A$ is derived equivalent to a smooth projective scheme, then any derived equivalence between $A$ and another algebra $B$ is standard, that…

Rings and Algebras · Mathematics 2021-09-27 Xiaofa Chen , Xiao-Wu Chen

We establish an equivalence between the stable category of coherent sheaves (satisfying a mild restriction) on a projective space and the homotopy category of a certain class of minimal complexes of free modules over the exterior algebra…

Algebraic Geometry · Mathematics 2010-03-24 Iustin Coanda

We construct an equivalence between the derived category of sheaves on an elliptic threefold without a section and a derived category of twisted sheaves (modules over an Azumaya algebra) on any small resolution of its relative Jacobian.

Algebraic Geometry · Mathematics 2007-05-23 Andrei Caldararu