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We study abelian quotient categories A=T/J, where T is a triangulated category and J is an ideal of T. Under the assumption that the quotient functor is cohomological we show that it is representable and give an explicit description of the…

Representation Theory · Mathematics 2015-07-21 Benedikte Grimeland , Karin Marie Jacobsen

In this work, we establish a categorification of the classical Dold-Kan correspondence in the form of an equivalence between suitably defined $\infty$-categories of simplicial stable $\infty$-categories and connective chain complexes of…

Algebraic Topology · Mathematics 2021-06-01 Tobias Dyckerhoff

The orthogonal groups are a series of simple Lie groups associated to symmetric bilinear forms. There is no analogous series associated to symmetric trilinear forms. We introduce an infinite dimensional group-like object that can be viewed…

Representation Theory · Mathematics 2021-09-27 Andrew Snowden

Right triangulated categories can be thought of as triangulated categories whose shift functor is not an equivalence. We give intrinsic characterisations of when such categories have a natural extriangulated structure and are appearing as…

Category Theory · Mathematics 2021-06-18 Aran Tattar

In this article we study a relative monoidal version of the Bondal-Orlov reconstruction theorem. We establish an uniqueness result for tensor triangulated category structures $(\boxtimes,\mathbb{1})$ on the derived category $D^{b}(X)$ of a…

Algebraic Geometry · Mathematics 2024-10-29 Artan Sheshmani , Angel Toledo

We provide a framework to triangulate subfactor categories of additive categories with additive endofunctors. It is proved that such a framework is sufficiently flexible to cover many instances in algebra and geometry where abelian, exact…

Representation Theory · Mathematics 2017-02-23 Zhi-Wei Li

We introduce a notion of partial presentability in parametrized higher category theory and investigate its interaction with the concepts of parametrized semiadditivity and stability from arXiv:2301.08240. In particular, we construct the…

Algebraic Topology · Mathematics 2025-09-19 Bastiaan Cnossen , Tobias Lenz , Sil Linskens

We classify the "quotients" of a tannakian category in which the objects of a tannakian subcategory become trivial, and we examine the properties of such quotient categories.

Category Theory · Mathematics 2021-01-19 J. S. Milne

We exhibit examples of triangulated categories which are neither the stable category of a Frobenius category nor a full triangulated subcategory of the homotopy category of a stable model category. Even more drastically, our examples do not…

Algebraic Topology · Mathematics 2011-11-09 Fernando Muro , Stefan Schwede , Neil Strickland

We develop the general formalism of approximable triangulated categories, and prove two representability theorems.

Category Theory · Mathematics 2025-05-15 Amnon Neeman

We survey some methods developed in a series of papers, for classifying localising subcategories of tensor triangulated categories. We illustrate these methods by proving a new theorem, providing such a classification in the case of the…

Representation Theory · Mathematics 2020-10-21 Dave Benson , Srikanth B. Iyengar , Henning Krause , Julia Pevtsova

We define quasi--locally presentable categories as big unions of coreflective subcategories which are locally presentable. Under appropriate hypotheses we prove a representability theorem for exact contravariant functors defined on a…

Category Theory · Mathematics 2012-05-11 George Ciprian Modoi

For an abelian tensor category a stack is constructed. As an application we show that our construction can be used to recover a quasi-compact separated scheme from the category of its quasi-coherent sheaves. In another application, we show…

Algebraic Geometry · Mathematics 2012-06-04 Yu-Han Liu , Hsian-Hua Tseng

A new proof of the classification for tensor ideal thick subcategories of the bounded derived category, and the stable category, of modular representations of a finite group is obtained. The arguments apply more generally to yield a…

Representation Theory · Mathematics 2012-02-01 Jon F. Carlson , Srikanth B. Iyengar

This paper surveys some recent results, concerning the intrinsicness of natural subcategories of weakly approximable triangulated categories. We also review the results about uniqueness of enhancements of triangulated categories, with the…

Algebraic Geometry · Mathematics 2024-12-31 Alberto Canonaco , Amnon Neeman , Paolo Stellari

We define and study the functorial spectrum for every triangulated tensor category. A reconstruction result for topologically noetherian schemes similar to (and based on) a theorem by Balmer is proved. An alternative proof of the…

Algebraic Geometry · Mathematics 2011-07-28 Yu-Han Liu

We prove two results from Morita theory of stable model categories. Both can be regarded as topological versions of recent algebraic theorems. One is on recollements of triangulated categories, which have been studied in the algebraic case…

Algebraic Topology · Mathematics 2007-07-06 Andreas Heider

Let $R$ be a right notherian ring. We introduce the concept of relative singularity category $\Delta_{\mathcal{X}}(R)$ of $R$ with respect to a contravariantly finite subcategory $\mathcal{X}$ of $\rm{mod}\mbox{-}R.$ Along with some…

Representation Theory · Mathematics 2020-04-07 Rasool Hafezi

A notion of mutation of subcategories in a right triangulated category is defined in this paper. When (Z,Z) is a D-mutation pair in a right triangulated category C, the quotient category Z/D carries naturally a right triangulated structure.…

Representation Theory · Mathematics 2019-02-21 Yu Liu , Bin Zhu

From every pair of adjoint functors it is possible to produce a (possibly trivial) equivalence of categories by restricting to the subcategories where the unit and counit are isomorphisms. If we do this for the adjunction between effect…

Logic in Computer Science · Computer Science 2019-01-30 Robert Furber
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