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Related papers: Some remarks on higher Morita categories

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The deformation bicomplex of a module-algebra over a bialgebra is constructed. It is then applied to study algebraic deformations in which both the module structure and the algebra structure are deformed. The cases of module-coalgebras,…

Algebraic Topology · Mathematics 2008-12-07 Donald Yau

We establish a Morita theorem to construct triangle equivalences between the singularity categories of (commutative and non-commutative) Gorenstein rings and the cluster categories of finite dimensional algebras over fields, and more…

Representation Theory · Mathematics 2024-10-15 Norihiro Hanihara , Osamu Iyama

Highest weight modules of the double affine Lie algebra $\widehat{\widehat{\mathfrak{sl}}}_{2}$ are studied under a new triangular decomposition. Singular vectors of Verma modules are determined using a similar condition with horizontal…

Quantum Algebra · Mathematics 2017-03-02 Naihuan Jing , Chunhua Wang

Let O be a topological (colored) operad. The Lurie infinity-category of O-algebras with values in (infinity-category of) complexes is compared to the infinity-category underlying the model category of (classical) dg O-algebras. This can be…

Quantum Algebra · Mathematics 2015-09-21 V. Hinich

In this paper we prove the equivalence of two symmetric monoidal $\infty$-categories of $\infty$-operads, the one defined in Lurie's book on Higher Algebra and the one based on dendroidal spaces. V.2 Some corrections made and exposition…

Category Theory · Mathematics 2024-10-10 Vladimir Hinich , Ieke Moerdijk

We construct a category equivalent to the category $\mathbf{Mon}$ of monoids and monoid homomorphisms, based on categories with strict factorization systems. This equivalence is then extended to the category $\mathbf{Mon_s}$ of unital…

Category Theory · Mathematics 2025-10-31 Xavier Mary

Two rings A and B are said to be derived Morita equivalent if their derived categories of modules are equivalent. By results of Rickard, if A and B are derived Morita equivalent algebras over a field k, then there is a complex of bimodules…

Rings and Algebras · Mathematics 2007-05-23 Amnon Yekutieli

We use duality theorems to obtain presentations of some categories of modules. To derive these presentations we generalize a result of Cautis-Kamnitzer-Morrison [arXiv:1210.6437v4]: Let $\mathfrak{g}$ be a reductive Lie algebra, and $A$ an…

Representation Theory · Mathematics 2018-03-26 Giulian Wiggins

Necessary and sufficient conditions are given for a $G$-graded simple module over a unital associative algebra, graded by an abelian group $G$, to be isomorphic to a loop module of a simple module, as well as for two such loop modules to be…

Representation Theory · Mathematics 2016-09-12 Alberto Elduque , Mikhail Kochetov

We generalize Cohen & Jones & Segal's flow category whose objects are the critical points of a Morse function and whose morphisms are the Morse moduli spaces between the critical points to an n-category. The n-category construction involves…

Category Theory · Mathematics 2017-04-03 Sonja Hohloch

In this note we discuss Morita equivalence classes of arbitrary finitely presented algebras

Rings and Algebras · Mathematics 2018-06-05 Adel Alahmadi , Hamed Alsulami , Efim Zelmanov

We develop a new approach to highest weight categories $\cal{C}$ with good (and cogood) posets of weights via pseudocompact algebras by introducing ascending (and descending) quasi-hereditary pseudocompact algebras. For $\cal{C}$ admitting…

Rings and Algebras · Mathematics 2011-04-19 Frantisek Marko , Alexandr N. Zubkov

We revisit and generalize the application of a method introduced by Latr\'emoli\`ere and Packer for constructing finitely generated projective modules over the noncommutative solenoid C*-algebras. By realizing them as direct limits of…

Operator Algebras · Mathematics 2021-03-04 Shen Lu

A non-unital algebra in a closed monoidal category is called self-induced if the multiplication induces an isomorphism between A\otimes_A A and A. For such an algebra, we define smoothening and roughening functors that retract the category…

Rings and Algebras · Mathematics 2015-10-23 Ralf Meyer

Algebra objects in $\infty$-categories of spans admit a description in terms of $2$-Segal objects. We introduce a notion of span between $2$-Segal objects and extend this correspondence to an equivalence of $\infty$-categories.…

Algebraic Topology · Mathematics 2025-10-30 Jonte Gödicke

Let $A$ be a hereditary algebra. We construct a fundamental domain for the cluster category of $A$ inside the category of modules over the duplicated algebra $\bar{A}$ of $A$. We then prove that there exists a bijection between the tilting…

Representation Theory · Mathematics 2007-05-23 Ibrahim Assem , Thomas Brüstle , Ralf Schiffler , Gordana Todorov

This article investigates duals for bimodule categories over finite tensor categories. We show that finite bimodule categories form a tricategory and discuss the dualities in this tricategory using inner homs. We consider inner-product…

Quantum Algebra · Mathematics 2014-05-23 Gregor Schaumann

By a theorem due to Kato and Ohtake, any (not necessarily strict) Morita context induces an equivalence between appropriate subcategories of the module categories of the two rings in the Morita context. These are in fact categories of firm…

Rings and Algebras · Mathematics 2012-01-27 Gabriella Böhm , Joost Vercruysse

We construct a duality functor on the category of continuous representations of linearly compact Lie superalgebras, using representation theory of Lie conformal superalgebras. We compute the dual representations of the generalized Verma…

Representation Theory · Mathematics 2021-04-16 Nicoletta Cantarini , Fabrizio Caselli , Victor Kac

Regular and higher regular graded algebras (in simplest case satisfying Von Neumann regularity $\Theta_{1}\Theta_{2}\Theta_{1}=\Theta_{1}$ instead of anticommutativity) are introduced and their properties are studied. They are described in…

Quantum Algebra · Mathematics 2007-05-23 Steven Duplij , Wladyslaw Marcinek