On purity and applications to coderived and singularity categories

J Stovicek - arXiv preprint arXiv:1412.1615, 2014 - arxiv.org
Given a locally coherent Grothendieck category G, we prove that the homotopy category of
complexes of injective objects (also known as the coderived category of G) is compactly …

The tilting–cotilting correspondence

L Positselski, J Šťovíček - International Mathematics Research …, 2021 - academic.oup.com
To a big-tilting object in a complete, cocomplete abelian category with an injective
cogenerator we assign a big-cotilting object in a complete, cocomplete abelian category with …

[HTML][HTML] Gorenstein conditions over triangular matrix rings

EE Enochs, M Cortés-Izurdiaga, B Torrecillas - Journal of Pure and Applied …, 2014 - Elsevier
A ring is left Gorenstein regular if the classes of left modules with finite projective dimension
and finite injective dimension coincide and the injective and projective finitistic left …

Totally acyclic complexes over Noetherian schemes

D Murfet, S Salarian - Advances in Mathematics, 2011 - Elsevier
We define a notion of total acyclicity for complexes of flat quasi-coherent sheaves on a semi-
separated noetherian scheme, and study these complexes using the pure derived category …

Homotopy equivalences induced by balanced pairs

XW Chen - Journal of Algebra, 2010 - Elsevier
We introduce the notion of balanced pair of additive subcategories in an abelian category.
We give sufficient conditions under which a balanced pair of subcategories gives rise to a …

Injective representations of infinite quivers. Applications

E Enochs, S Estrada, JRG Rozas - Canadian Journal of Mathematics, 2009 - cambridge.org
Injective Representations of Infinite Quivers. Applications Page 1 Canad. J. Math. Vol. 61 (2),
2009 pp. 315–335 Injective Representations of Infinite Quivers. Applications E. Enochs, S …

On a question of Gillespie

X Yang, N Ding - Forum Mathematicum, 2015 - degruyter.com
A question of Gillespie concerning the completeness of the induced cotorsion pairs is settled
in the general setting of any bicomplete abelian category. That is, given a complete …

Total acyclicity for complexes of representations of quivers

H Eshraghi, R Hafezi, S Salarian - Communications in Algebra, 2013 - Taylor & Francis
We study total acyclicity for complexes of projective and injective representations of quivers.
A classification is given for such complexes in terms of associated vertex-complexes. When …

Gorenstein projective modules and recollements over triangular matrix rings

H Li, Y Zheng, J Hu, H Zhu - Communications in Algebra, 2020 - Taylor & Francis
Abstract Let T=(RM 0 S) be a triangular matrix ring with R and S rings and RMS an R–S-
bimodule. We describe Gorenstein projective modules over T. In particular, we refine a result …

[HTML][HTML] Model category structures arising from Drinfeld vector bundles

S Estrada, PAG Asensio, M Prest, J Trlifaj - Advances in Mathematics, 2012 - Elsevier
We present a general construction of model category structures on the category C (Qco (X))
of unbounded chain complexes of quasi-coherent sheaves on a semi-separated scheme X …