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Related papers: Derived equivalences via HRS-tilting

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We define tilting subcategories in arbitrary exact categories to archieve the following. Firstly: Unify existing definitions of tilting subcategories to arbitrary exact categories. Discuss standard results for tilting subcategories:…

Representation Theory · Mathematics 2022-08-15 Julia Sauter

In an abelian category $\mathscr{A}$, we can generate torsion pairs from tilting objects of projective dimension $\leq 1$. However, when we look at tilting objects of projective dimension $2$, there is no longer a natural choice of an…

Representation Theory · Mathematics 2024-06-21 Anders S. Kortegaard

In this article, we prove that if $(\mathcal A ,\mathcal B,\mathcal C)$ is a recollement of extriangulated categories, then torsion pairs in $\mathcal A$ and $\mathcal C$ can induce torsion pairs in $\mathcal B$, and the converse holds…

Representation Theory · Mathematics 2023-02-07 Jian He , Yonggang Hu , Panyue Zhou

Let $\mathscr{A}$ be a small abelian category. For a closed subbifunctor $F$ of $\Ext_{\mathscr{A}}^{1}(-,-)$, Buan has generalized the construction of the Verdier's quotient category to get a relative derived category, where he localized…

Representation Theory · Mathematics 2016-10-27 Shengyong Pan

We produce twisted derived equivalences between torsors under abelian varieties and their moduli spaces of simple semi-homogeneous sheaves. We also establish the natural converse to this result and show that a large class of twisted derived…

Algebraic Geometry · Mathematics 2024-11-18 Tyler Lane

We associate a t-structure to a family of objects in D(A), the derived category of a Grothendieck category A. Using general results on t-structures, we give a new proof of Rickard's theorem on equivalence of bounded derived categories of…

Representation Theory · Mathematics 2007-05-23 Leovigildo Alonso , Ana Jeremias , Ma. -Jose Souto

Let A be an abelian category of finite type and homological dimension 1. Then by results of Green R(A), the extended Hall-Ringel algebra of A, has a natural Hopf algebra structure. We consider its Heisenberg double Heis(A) and study its…

q-alg · Mathematics 2008-02-03 M. Kapranov

We give a classification theorem for a relevant class of $t$-structures in triangulated categories, which includes in the case of the derived category of a Grothendieck category, the $t$-structures whose hearts have at most $n$ fixed…

Representation Theory · Mathematics 2014-12-31 Luisa Fiorot , Francesco Mattiello , Alberto Tonolo

It is a well established fact that the notions of quasi-abelian categories and tilting torsion pairs are equivalent. This equivalence fits in a wider picture including tilting pairs of $t$-structures. Firstly, we extend this picture into a…

Representation Theory · Mathematics 2020-01-01 Luisa Fiorot

For an abelian category, a category equivalent to its derived category is constructed by means of specific projective (injective) multicomplexes, the so-called homological resolutions.

Algebraic Topology · Mathematics 2008-10-28 Samson Saneblidze

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 prove that any derived equivalence between derived-discrete algebras of finite global dimension is standard, that is, isomorphic to the derived tensor functor by a two-sided tilting complex.

Representation Theory · Mathematics 2017-05-16 Xiao-Wu Chen , Chao Zhang

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

Derived decompositions of abelian categories are introduced in internal terms of abelian subcategories to construct semi-orthogonal decompositions (or Bousfield localizations, or hereditary torsion pairs) in various derived categories of…

Representation Theory · Mathematics 2018-11-26 Hongxing Chen , Changchang Xi

In an ongoing project to classify all hereditary abelian categories, we provide a classification of Ext-finite directed hereditary abelian categories satisfying Serre duality up to derived equivalence. In order to prove the classification,…

Category Theory · Mathematics 2007-05-23 Adam-Christiaan van Roosmalen

We consider filtrations of objects in an abelian category $\catA$ induced by a tilting object $T$ of homological dimension at most two. We define three disjoint subcategories with no maps between them in one direction, such that each object…

Representation Theory · Mathematics 2010-07-21 Bernt Tore Jensen , Dag Madsen , Xiuping Su

We generalize Brenner and Butler's Theorem as well as Happel's Theorem on the equivalences induced by a finitely generated tilting module over artin algebras, to the case of an infinitely generated tilting module over an arbitrary…

Rings and Algebras · Mathematics 2019-12-16 Silvana Bazzoni

An adjoint pair of contravariant functors between abelian categories can be extended to the adjoint pair of their derived functors in the associated derived categories. We describe the reflexive complexes and interpret the achieved results…

K-Theory and Homology · Mathematics 2009-05-20 Francesca Mantese , Alberto Tonolo

We show that torsion pairs in Krull--Schmidt abelian categories induce an equivalence between the subcategory of torsion-free objects admitting universal extensions to the torsion subcategory, and a quotient of the ext-orthogonal complement…

Representation Theory · Mathematics 2024-10-22 Endre S. Rundsveen

We prove that any derived equivalence between derived discrete algebras is standard, i.e.\ is isomorphic to the derived tensor product by a two-sided tilting complex.

Representation Theory · Mathematics 2026-02-17 Grzegorz Bobinski , Tomasz Ciborski