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We determine the Hall algebra, in the sense of Toen, of the algebraic triangulated category generated by a spherical object.

表示论 · 数学 2014-02-26 Bernhard Keller , Dong Yang , Guodong Zhou

We analyse some aspects of the notion of algebraic exponentiation introduced by the second author [16] and satisfied by the category of groups. We show how this notion provides a new approach to the categorical-algebraic question of the…

范畴论 · 数学 2011-12-20 Dominique Bourn , James R. A. Gray

This article develops a practical technique for studying representations of $\Bbbk$-linear categories arising in the categorification of quantum groups. We work in terms of locally unital algebras which are $\mathbb{Z}$-graded with graded…

表示论 · 数学 2025-08-05 Jonathan Brundan

In [Ben13], the notion of logically distributive category has been introduced to provide a sound and complete semantics to multi-sorted first-order logical theories based on intuitionistic logic. In this note, it will be shown that the…

范畴论 · 数学 2014-06-06 Marco Benini

The Popescu-Gabriel theorem states that each Grothendieck abelian category is a localization of a module category. In this paper, we prove an analogue where Grothendieck abelian categories are replaced by triangulated categories which are…

K理论与同调 · 数学 2008-02-15 Marco Porta

Category theory provides an alternative to Hilbert's Formal Axiomatic method and goes beyond Mathematical Structuralism

综合数学 · 数学 2007-05-23 Andrei Rodin

We introduce a notion of complexity of diagrams (and in particular of objects and morphisms) in an arbitrary category, as well as a notion of complexity of functors between categories equipped with complexity functions. We discuss several…

范畴论 · 数学 2020-07-01 Saugata Basu , M. Umut Isik

A notion of an algebroid - a generalization of a Lie algebroid structure is introduced. We show that many objects of the differential calculus on a manifold M associated with the canonical Lie algebroid structure on T^M can be obtained in…

微分几何 · 数学 2009-10-31 Janusz Grabowski , Pawel Urbanski

This is the first in a series of papers in which we study representations of the Brauer category and its allies. We define a general notion of triangular category that abstracts key properties of the triangular decomposition of a semisimple…

表示论 · 数学 2024-10-10 Steven V Sam , Andrew Snowden

We show that if a (not necessarily algebraic) triangulated category T contains an admissible hereditary abelian subcategory H, then we can lift the inclusion of H into T to a fully faithful triangle functor from the whole of the bounded…

环与代数 · 数学 2016-12-21 Andrew Hubery

The stable module category of a selfinjective algebra is triangulated, but need not have any nontrivial $t$-structures, and in particular, full abelian subcategories need not arise as hearts of a $t$-structure. The purpose of this paper is…

表示论 · 数学 2021-01-05 Markus Linckelmann

According to the basic idea of category theory, any Einstein algebra, essentially an algebraic formulation of general relativity, can be considered from the point of view of any object of the category of smooth algebras; such an object is…

数学物理 · 物理学 2022-10-26 Leszek Pysiak , Wiesław Sasin , Michael Heller , Tomasz Miller

We construct a category, $\Omega$, of which the objects are pointed categories and the arrows are pointed correspondences. The notion of a "spec datum" is introduced, as a certain relation between categories, of which one has been given a…

范畴论 · 数学 2017-10-24 Bradley M. Willocks

These notes deal with finite-dimensional normed algegras, some basic examples, and the definition of the spectrum.

经典分析与常微分方程 · 数学 2007-05-23 Stephen Semmes

We contemplate the notion of ambiguity in mathematical discourse. We consider a general method of resolving ambiguity and semantic options for sustaining a resolution. The general discussion is applied to the case of `fraction' which is…

计算机科学中的逻辑 · 计算机科学 2026-04-07 Jan A Bergstra , John V Tucker

Representations over diagrams of abelian categories unify quite a few notions appearing widely in literature such as representations of categories, presheaves of modules over categories, representations of species, etc. In this series of…

表示论 · 数学 2023-08-01 Zhenxing Di , Liping Li , Li Liang , Nina Yu

We consider triangulated orbit categories, with the motivating example of cluster categories, in their usual context of algebraic triangulated categories, then present them from another perspective in the framework of topological…

代数拓扑 · 数学 2014-11-14 Julia E. Bergner , Marcy Robertson

We continue the investigation of tabular algebras with trace (a certain class of associative ${\Bbb Z}[v, v^{-1}]$-algebras equipped with distinguished bases) by determining the extent to which the tabular structure may be recovered from a…

量子代数 · 数学 2007-05-23 R. M. Green

In this article, the theory of sheaves is studied from a categorical point of view. This perspective vastly generalizes the usual theory of sheaves of sets to a more abstract setting which allows us to investigate the theory of sheaves with…

交换代数 · 数学 2017-09-22 Abolfazl Tarizadeh

We call a triangulated category \emph{hereditary} provided that it is equivalent to the bounded derived category of a hereditary abelian category, where the equivalence is required to commute with the translation functors. If the…

环与代数 · 数学 2019-02-19 Xiao-Wu Chen , Claus Michael Ringel