[PDF][PDF] Extriangulated categories, Hovey twin cotorsion pairs and model structures

H Nakaoka, Y Palu - Cah. Topol. Géom. Différ. Catég, 2019 - cahierstgdc.com
We give a simultaneous generalization of exact categories and triangulated categories,
which is suitable for considering cotorsion pairs, and which we call extriangulated …

[HTML][HTML] Hearts of twin cotorsion pairs on extriangulated categories

Y Liu, H Nakaoka - Journal of Algebra, 2019 - Elsevier
In this article, we study the heart of a cotorsion pairs on an exact category and a triangulated
category in a unified method, by means of the notion of an extriangulated category. We …

[HTML][HTML] A resolution theorem for extriangulated categories with applications to the index

Y Ogawa, A Shah - Journal of Algebra, 2024 - Elsevier
Abstract Quillen's Resolution Theorem in algebraic K-theory provides a powerful
computational tool for calculating K-groups of exact categories. At the level of K 0, this result …

[HTML][HTML] Auslander-Reiten theory in quasi-abelian and Krull-Schmidt categories

A Shah - Journal of Pure and Applied Algebra, 2020 - Elsevier
We generalise some of the theory developed for abelian categories in papers of Auslander
and Reiten to semi-abelian and quasi-abelian categories. In addition, we generalise some …

Cluster subalgebras and cotorsion pairs in Frobenius extriangulated categories

W Chang, P Zhou, B Zhu - Algebras and Representation Theory, 2019 - Springer
Nakaoka and Palu introduced the notion of extriangulated categories by extracting the
similarities between exact categories and triangulated categories. In this paper, we study …

Mutation via Hovey twin cotorsion pairs and model structures in extriangulated categories

H Nakaoka, Y Palu - arXiv preprint arXiv:1605.05607, 2016 - arxiv.org
We give a simultaneous generalization of exact categories and triangulated categories,
which is suitable for considering cotorsion pairs, and which we call extriangulated …

[HTML][HTML] Hearts of twin cotorsion pairs on exact categories

Y Liu - Journal of Algebra, 2013 - Elsevier
In the papers of Nakaoka, he introduced the notion of hearts of (twin) cotorsion pairs on
triangulated categories and showed that they have structures of (semi-) abelian categories …

Integral and quasi-abelian hearts of twin cotorsion pairs on extriangulated categories

S Hassoun, A Shah - Communications in Algebra, 2020 - Taylor & Francis
It was shown recently that the heart H¯ of a twin cotorsion pair ((S, T),(U, V)) on an
extriangulated category is semi-abelian. We provide a sufficient condition for the heart to be …

Examples and non-examples of integral categories and the admissible intersection property

S Hassoun, A Shah, SA Wegner - arXiv preprint arXiv:2005.11309, 2020 - arxiv.org
Integral categories form a sub-class of pre-abelian categories whose systematic study was
initiated by Rump in 2001. In the first part of this article we determine whether several …

Localization of triangulated categories with respect to extension-closed subcategories

Y Ogawa - Algebras and Representation Theory, 2024 - Springer
The aim of this paper is to develop a framework for localization theory of triangulated
categories\(\mathcal {C}\), that is, from a given extension-closed subcategory\(\mathcal {N}\) …