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For a collection of subcategories satisfying a fixed set of conditions, for example thick subcategories of a triangulated category, we define a topological space called classifying space of subcategories. We show that this space classifies…

Category Theory · Mathematics 2017-09-12 Yong Liu

We study some natural generalizations of the spectral spaces in the contexts of commutative rings and distributive lattices. We obtain a topological characterization for the spectra of commutative (not necessarily unitary) rings and we find…

General Topology · Mathematics 2022-03-30 Lorenzo Acosta G. , I. Marcela Rubio P

For a tensor triangulated category and any regular cardinal $\alpha$ we study the frame of $\alpha$-localizing tensor ideals and its associated space of points. For a well-generated category and its frame of localizing tensor ideals we…

Category Theory · Mathematics 2022-09-07 Henning Krause , Janina C. Letz

The moduli space of triangles is a two-dimensional space that records triangle shapes in the plane, considered up to similarity. We study the subset corresponding to \textit{lattice triangles}, which are triangles whose vertices have…

Metric Geometry · Mathematics 2026-04-02 Aahana Aggarwal , Subhojoy Gupta , Ajay K. Nair

For any essentially small triangulated category the centre of its lattice of thick subcategories is introduced; it is a spatial frame and yields a notion of central support. A relative version of this centre recovers the support theory for…

Category Theory · Mathematics 2023-11-28 Henning Krause

We use a $K$-theory recipe of Thomason to obtain classifications of triangulated subcategories via refining some standard thick subcategory theorems. We apply this recipe to the full subcategories of finite objects in the derived categories…

Algebraic Topology · Mathematics 2009-12-03 Sunil K. Chebolu

We present an approximation to topological spaces by {\it noncommutative} lattices. This approximation has a deep physical flavour based on the impossibility to fully localize particles in any position measurement. The original space being…

Mathematical Physics · Physics 2007-05-23 Giovanni Landi , Fedele Lizzi

For any compactly generated triangulated category we introduce two topological spaces, the shift-spectrum and the shift-homological spectrum. We use them to parametrise a family of thick subcategories of the compact objects, which we call…

Category Theory · Mathematics 2026-01-07 Isaac Bird , Jordan Williamson , Alexandra Zvonareva

We classify certain subcategories in quotients of exact categories. In particular, we classify the triangulated and thick subcategories of an algebraic triangulated category, i.e. the stable category of a Frobenius category.

Category Theory · Mathematics 2017-12-15 Emilie Arentz-Hansen

We classify the thick subcategories of an algebraic triangulated standard category with finitely many indecomposable objects.

Category Theory · Mathematics 2010-10-04 Claudia Köhler

Given a thick subcategory of a triangulated category, we define a colocalisation and a natural long exact sequence that involves the original category and its localisation and colocalisation at the subcategory. Similarly, we construct a…

Category Theory · Mathematics 2015-10-23 Hvedri Inassaridze , Tamaz Kandelaki , Ralf Meyer

We define the spectrum of a tensor triangulated category $K$ as the set of so-called prime ideals, endowed with a suitable topology. In this very generality, the spectrum is the universal space in which one can define supports for objects…

Category Theory · Mathematics 2007-05-23 Paul Balmer

For an essentially small triangulated category $\mathcal{T}$, we introduce the notion of prime thick subcategories and define the spectrum of $\mathcal{T}$, which shares the basic properties with the spectrum of a tensor triangulated…

Algebraic Geometry · Mathematics 2021-10-13 Hiroki Matsui

A notion of stratification is introduced for any compactly generated triangulated category T endowed with an action of a graded commutative noetherian ring R. The utility of this notion is demonstrated by establishing diverse consequences…

Category Theory · Mathematics 2014-02-26 Dave Benson , Srikanth B. Iyengar , Henning Krause

We introduce the category of finite strings and study its basic properties. The category is closely related to the augmented simplex category, and it models categories of linear representations. Each lattice of non-crossing partitions…

Representation Theory · Mathematics 2021-09-14 Henning Krause

Given a bounded-above cochain complex of modules over a ring, it is standard to replace it by a projective resolution, and it is classical that doing so can be very useful. Recently, a modified version of this was introduced in triangulated…

Category Theory · Mathematics 2023-12-20 Jesse Burke , Amnon Neeman , Bregje Pauwels

Let $R$ be a commutative ring. A full additive subcategory $\C$ of $R$-modules is triangulated if whenever two terms of a short exact sequence belong to $\C$, then so does the third term. In this note we give a classification of…

Commutative Algebra · Mathematics 2009-12-03 Sunil K. Chebolu

We develop a correspondence between presentations of compactly generated triangulated categories as localizations of derived categories of ring spectra and proxy-small objects, and explore some consequences. In addition, we give a…

Category Theory · Mathematics 2024-12-19 Benjamin Briggs , Srikanth B. Iyengar , Greg Stevenson

The category of distributive lattices is, in classical mathematics, antiequivalent to the category of spectral spaces. We give here some examples and a short dictionary for this antiequivalence. We propose a translation of several abstract…

Commutative Algebra · Mathematics 2025-02-18 Henri Lombardi

We classify t-structures and thick subcategories in discrete cluster categories $\mathcal{C}(\mathcal{Z})$ of Dynkin type $A$, and show that the set of all t-structures on $\mathcal{C}(\mathcal{Z})$ is a lattice under inclusion of aisles,…

Representation Theory · Mathematics 2022-12-29 Sira Gratz , Alexandra Zvonareva
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