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Related papers: Recollements induced by left Frobenius pairs

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In this article, we study the heart of a cotorsion pairs on an exact category and a triangulated category in a unified meathod, by means of the notion of an extriangulated category. We prove that the heart is abelian, and construct a…

Category Theory · Mathematics 2020-03-16 Yu Liu , Hiroyuki Nakaoka

We develop theory and examples of monoidal functors on tensor categories in positive characteristic that generalise the Frobenius functor from \cite{Os, EOf, Tann}. The latter has proved to be a powerful tool in the ongoing classification…

Representation Theory · Mathematics 2025-06-25 Kevin Coulembier , Johannes Flake

In this article we construct various models for singularity categories of modules over differential graded rings. The main technique is the connection between abelian model structures, cotorsion pairs and deconstructible classes, and our…

Category Theory · Mathematics 2012-05-22 Hanno Becker

We present the notion of Gorenstein categories relative to G-admissible triples. This is a relativization of the concept of Gorenstein category (an abelian category with enough projective and injective objects, in which the suprema of the…

Category Theory · Mathematics 2025-02-19 Sergio Estrada , Octavio Mendoza , Marco A. Pérez

We construct relative abelian categories in the sense of MacLane for models of algebraic systems in (co)complete abelian categories. As an example, we consider an analogue of Hochschild-Mitchell cohomology for the functor of Yoneda…

K-Theory and Homology · Mathematics 2017-06-20 Simeon Pol'shin

Given a complete hereditary cotorsion pair (A,B) in ModR, we construct a complete hereditary cotorsion pair in the derived category D(R) of unbounded complexes with respect to the proper class {\xi} of cohomologically ghost triangles…

Category Theory · Mathematics 2025-12-16 Xiaoyan Yang

We consider three (2-)categories and their (anti-)equivalence. They are the category of small abelian categories and exact functors, the category of definable additive categories and interpretation functors, the category of locally coherent…

Category Theory · Mathematics 2012-02-03 Mike Prest

For any additive functor from modules (or, more generally, from an abelian category with enough projectives or injectives), we construct long sequences tying up together the derived functors, the satellites, and the stabilizations of the…

Representation Theory · Mathematics 2025-04-30 Alex Martsinkovsky

This paper studies fundamental questions concerning category-theoretic models of induction and recursion. We are concerned with the relationship between well-founded and recursive coalgebras for an endofunctor. For monomorphism preserving…

Logic in Computer Science · Computer Science 2020-02-18 Jiří Adámek , Stefan Milius , Lawrence S. Moss

We introduce the notion of affine strict polynomial functor. We show how this concept helps to understand homological behavior of the operation of Frobenius twist in the category of strict polynomial functors over a field of positive…

K-Theory and Homology · Mathematics 2014-11-14 Marcin Chałupnik

Given a morphism of (small) groupoids with injective object map, we provide sufficient and necessary conditions under which the induction and co-induction functors between the categories of linear representations are naturally isomorphic. A…

Representation Theory · Mathematics 2019-03-13 Juan Jesús Barbarán Sánchez , Laiachi EL Kaoutit

A classification is provided of functors, in particular polynomial ones, from a category with a zero object in which every object is a finite sum of copies of a generating object, into an abelian category. This classification is extended to…

Category Theory · Mathematics 2015-05-13 Qimh Richey Xantcha

We study the transfer of (dual) relative CS-Rickart properties via functors between abelian categories. We consider fully faithful functors as well as adjoint pairs of functors. We give several applications to Grothendieck categories and,…

Category Theory · Mathematics 2021-04-09 Septimiu Crivei , Simona Maria Radu

Suppose that $F: \mathcal{N} \to \mathcal{M}$ is a functor whose target is a Quillen model category. We give a succinct sufficient condition for the existence of the right-induced model category structure on $\mathcal{N}$ in the case when…

Category Theory · Mathematics 2026-03-13 Gabriel C. Drummond-Cole , Philip Hackney

Let $\mathcal{A}$ be an abelian category. For a pair $(\mathcal{X},\mathcal{Y}$ of classes of objects in $\mathcal{A},$ we define the weak and the $(\mathcal{X},\mathcal{Y})$-Gorenstein relative projective objects in $\mathcal{A}$. We point…

Rings and Algebras · Mathematics 2019-11-21 Victor Becerril , Octavio Mendoza , Valente Santiago

A recollement of triangulated categories describes one such category as being "glued together" from two others. This paper gives a precise criterion for the existence of a recollement of the derived category of a Differential Graded Algebra…

K-Theory and Homology · Mathematics 2007-05-23 Peter Jorgensen

We observe that an enriched right adjoint functor between model categories which preserves acyclic fibrations and fibrant objects is quite generically a right Quillen functor.

Algebraic Topology · Mathematics 2024-06-05 Victor Carmona

We study some aspects of the functor of parabolic induction within the context of reduced group C*-algebras and related operator algebras. We explain how Frobenius reciprocity fits naturally within the context of operator modules, and…

Representation Theory · Mathematics 2015-07-01 Tyrone Crisp , Nigel Higson

Let E be a Frobenius category, let_E_ denote its stable category. The shift functor on_E_ induces a first shift functor on the category of acyclic complexes with entries in_E_ by pointwise application. Shifting a complex by 3 positions…

Category Theory · Mathematics 2010-09-14 Matthias Kuenzer

In this note we consider different versions of coinduction functors between categories of comodules for corings induced by a morphism of corings. In particular we introduce a new version of the coinduction functor in the case of locally…

Rings and Algebras · Mathematics 2007-05-23 Jawad Abuhlail