Definability and approximations in triangulated categories
R Laking, J Vitória - Pacific journal of mathematics, 2020 - msp.org
We give criteria for subcategories of a compactly generated algebraic triangulated category
to be precovering or preenveloping. These criteria are formulated in terms of closure …
to be precovering or preenveloping. These criteria are formulated in terms of closure …
Extriangulated ideal quotients and Gabriel-Zisman localizations
Y Liu, P Zhou - Science China Mathematics, 2024 - Springer
Abstract Let (B, E, s) be an extriangulated category and S be an extension closed
subcategory of ℬ. In this article, we prove that the Gabriel-Zisman localization B/S can be …
subcategory of ℬ. In this article, we prove that the Gabriel-Zisman localization B/S can be …
Singular equivalences and Auslander-Reiten conjecture
Auslander-Reiten conjecture, which says that an Artin algebra does not have any non-
projective generator with vanishing self-extensions in all positive degrees, is shown to be …
projective generator with vanishing self-extensions in all positive degrees, is shown to be …
On singular equivalences of Morita type with level and Gorenstein algebras
G Dalezios - Bulletin of the London Mathematical Society, 2021 - Wiley Online Library
Rickard proved that for certain self‐injective algebras, a stable equivalence induced from an
exact functor is a stable equivalence of Morita type, in the sense of Broué. In this paper we …
exact functor is a stable equivalence of Morita type, in the sense of Broué. In this paper we …
Totally acyclic approximations
PA Bergh, DA Jorgensen, WF Moore - Applied Categorical Structures, 2021 - Springer
Abstract Let Q → RQ→ R be a surjective homomorphism of Noetherian rings such that Q is
Gorenstein and R as a Q-bimodule admits a finite resolution by modules which are …
Gorenstein and R as a Q-bimodule admits a finite resolution by modules which are …
Filtered derived categories of curved deformations
A Lehmann, W Lowen - arXiv preprint arXiv:2402.08660, 2024 - arxiv.org
We propose a solution to the''curvature problem''from arXiv: 1505.03698 and arXiv:
0905.3845 for infinitesimal deformations. Let $ k $ be a field, $ A $ a dg algebra over $ k …
0905.3845 for infinitesimal deformations. Let $ k $ be a field, $ A $ a dg algebra over $ k …
Purity and ascent for Gorenstein flat cotorsion modules
I Bird - arXiv preprint arXiv:2108.08135, 2021 - arxiv.org
The extension of scalars functor along a finite ring homomorphism is a classic example of a
functor which preserves purity and pure injectivity. We consider how this functor behaves …
functor which preserves purity and pure injectivity. We consider how this functor behaves …
Partial Serre duality and cocompact objects
S Oppermann, C Psaroudakis, T Stai - Selecta Mathematica, 2023 - Springer
A successful theme in the development of triangulated categories has been the study of
compact objects. A weak dual notion called 0-cocompact objects was introduced in …
compact objects. A weak dual notion called 0-cocompact objects was introduced in …
Lifting recollements of abelian categories and model structures
G Dalezios, C Psaroudakis - Journal of Algebra, 2023 - Elsevier
We use Quillen model structures to show a systematic method to lift recollements of
hereditary abelian model categories to recollements of their associated homotopy …
hereditary abelian model categories to recollements of their associated homotopy …
On triangle equivalences of stable categories
Z Di, Z Liu, J Wei - Proceedings of the Royal Society of Edinburgh …, 2020 - cambridge.org
We apply the Auslander–Buchweitz approximation theory to show that the Iyama and
Yoshino's subfactor triangulated category can be realized as a triangulated quotient …
Yoshino's subfactor triangulated category can be realized as a triangulated quotient …