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We classify all finite dimensional algebras which are derived equivalent to m-cluster tilted algebras of type A.

Representation Theory · Mathematics 2012-01-23 Juan Carlos Bustamante , Viviana Gubitosi

In this paper we study derived equivalences for Symplectic reflection algebras. We establish a version of the derived localization theorem between categories of modules over Symplectic reflection algebras and categories of coherent sheaves…

Representation Theory · Mathematics 2020-05-21 Ivan Losev

We present a general construction of the derived category of an algebra over an operad and establish its invariance properties. A central role is played by the enveloping operad of an algebra over an operad.

Algebraic Topology · Mathematics 2016-04-04 Clemens Berger , Ieke Moerdijk

We show that Derksen-Weyman-Zelevinsky's mutations of quivers with potential yield equivalences of suitable 3-Calabi-Yau triangulated categories. Our approach is related to that of Iyama-Reiten and Koszul dual to that of…

Representation Theory · Mathematics 2009-12-02 Bernhard Keller , Dong Yang

Let G be a complex algebraic semi-simple adjoint group and X a smooth complete symmetric G-variety. Let L_i be the irreducible G-equivariant intersection cohomology complexes on X, and L the direct sum of the L_i. Let E= Ext(L,L) be the…

Algebraic Geometry · Mathematics 2007-05-23 Stéphane Guillermou

In this paper we give the derived equivalence classification of cluster-tilted algebras of type An. We show that the bounded derived category of such an algebra depends only on the number of 3-cycles in the quiver of the algebra.

Representation Theory · Mathematics 2007-11-08 Aslak Bakke Buan , Dagfinn F. Vatne

We show that any (n+1)-term silting complex whose intermediate cohomology vanishes gives rise to an n-silting module, as recently introduced by Mao. Specializing to commutative noetherian rings, we show that this assignment induces a…

Representation Theory · Mathematics 2026-02-20 Michal Hrbek , Jiangsheng Hu , Rongmin Zhu

Let R and S be differential graded algebras. In this paper we give a characterisation of when a differential graded R-S-bimodule M induces a full embedding of derived categories M\otimes - :D(S)--> D(R). In particular, this characterisation…

Rings and Algebras · Mathematics 2010-06-03 David Pauksztello

We develop the theory dg algebras with enough idempotents and their dg modules and show their equivalence with that of small dg categories and their dg modules. We introduce the concept of dg adjunction and show that the classical covariant…

Representation Theory · Mathematics 2017-05-03 Manuel Saorín

We study thick subcategories of derived categories of gentle algebras. Any thick subcategory of a derived category of a gentle algebra is generated by a set of string objects or a set of band objects. We show the thick subcategories…

Representation Theory · Mathematics 2025-02-18 Callum Page

We introduce the notion of an $n$-exact dg-category. This notion provides a higher analogue of Chen's exact dg-category, in the sense that the case where $n$ equals 1 recovers exact dg-categories. We prove that, under a suitable vanishing…

Category Theory · Mathematics 2026-04-08 Nao Mochizuki , Hiroyuki Nakaoka

We classify derived-discrete algebras over the real numbers up to Morita equivalence, using the classification of complex derived-discrete algebras in [{\sc D. Vossieck}, {\em The algebras with discrete derived category}, J. Algebra {\bf…

Representation Theory · Mathematics 2025-12-09 Jie Li

We prove that the derived categories of abelian categories have unique enhancements -- all of them, the unbounded, bounded, bounded above and bounded below derived categories. The unseparated and left completed derived categories of a…

Algebraic Geometry · Mathematics 2021-01-13 Alberto Canonaco , Amnon Neeman , Paolo Stellari

If K is a commutative ring and A is a K-algebra, for any sequence $\sigma $ of positive integers there exists an higher order analogue dR($\sigma $) of the standard de Rham complex dR(1,...,1,...), which can also be defined starting from…

Rings and Algebras · Mathematics 2007-05-23 Gabriele Vezzosi , Alexandre M. Vinogradov

Using techniques due to Dwyer-Greenlees-Iyengar we construct weight structures in triangulated categories generated by compact objects. We apply our result to show that, for a dg category whose homology vanishes in negative degrees and is…

Representation Theory · Mathematics 2011-09-15 Bernhard Keller , Pedro Nicolas

We show that semi-infinite cohomology of a finite dimensional graded algebra (satisfying some additional requirements) are a particular case of a general categorical construction. The motivating example is provided by small quantum groups…

Representation Theory · Mathematics 2007-05-23 Roman Bezrukavnikov

Reflexive dg categories were introduced by Kuznetsov and Shinder to abstract the duality between bounded and perfect derived categories. In particular this duality relates their Hochschild cohomologies, autoequivalence groups, and…

Representation Theory · Mathematics 2025-12-12 Matt Booth , Isambard Goodbody , Sebastian Opper

We give an alternate formulation of pseudo-coherence over an arbitrary derived stack X. The full subcategory of pseudo-coherent objects forms a stable sub-infinity-category of the derived category associated to X. Using relative…

Algebraic Geometry · Mathematics 2012-07-06 Parker E. Lowrey

We complete the derived equivalence classification of all symmetric algebras of polynomial growth, by solving the subtle problem of distinguishing the standard and nonstandard nondomestic symmetric algebras of polynomial growth up to…

Representation Theory · Mathematics 2010-09-08 Thorsten Holm , Andrzej Skowronski

Let $\mathscr{A}$ and $\mathscr{B}$ be two connected cochain DG algebra such that $\mathscr{A}^{\#}=\mathscr{B}^{\#}$ and the cohomology rings $H(\mathscr{A})$ and $H(\mathscr{B})$ are isomorphic. We give examples to show that $\mathscr{A}$…

Rings and Algebras · Mathematics 2025-08-26 X. -F. Mao , R. -K. Lu
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