[PDF][PDF] SIGMA-PURE-INJECTIVE OBJECTS, CHARACTERISATIONS AND CLASSIFICATIONS FROM REPRESENTATION THEORY

R BENNETT-TENNENHAUS - profs.scienze.univr.it
… hand, flat cotorsion right modules have right cotorsion endomor… of totally acyclic complexes
of projective modules, evaluated in I, is equivalent to the category of totally acyclic complexes

Gorenstein weak global dimension is symmetric

LW Christensen, S Estrada… - Mathematische …, 2021 - Wiley Online Library
… The invariant is built on the theory of Gorenstein flat-cotorsion … An acyclic complex T of
flat-cotorsion A-modules is called totally acyclic if Hom A ( T , F ) is acyclic for every flat-cotorsion A-…

Homology theories and Gorenstein dimensions for complexes

L Liang - Algebras and Representation Theory, 2021 - Springer
… ◦ -modules and the class FC of flat and cotorsion R ◦ -modules are closed under extensions
and direct summands, and FC is a cogenerator for GF in the sense of Auslander and …

Bounded complexes of cotorsion sheaves

E Hosseini - Communications in Algebra, 2017 - Taylor & Francis
… every flat quasi-coherent sheaf has finite cotorsion dimension… dg-CofX)) is a complete cotorsion
theory in K(FlatX) where K(… category of dg-cotorsion complexes of flat 𝒪 X -modules. This …

Generalized Gorenstein modules

A Iacob - Algebra Colloquium, 2022 - World Scientific
… the right half of a hereditary cotorsion pair. If moreover the ring … (−,T), with T any flat module.
The Ding projective and the Ding … the A-acyclic complexes of injectives to the exact A-acyclic

Flat quasi-coherent sheaves as direct limits, and quasi-coherent cotorsion periodicity

L Positselski, J Stovicek - arXiv preprint arXiv:2212.09639, 2022 - arxiv.org
complexes of flat quasi-coherent sheaves on a scheme X: arbitrary complexes of flats, acyclic
complexes of flats with flat … of this paper are based on category theory. Let κ be a regular …

Five theorems on Gorenstein global dimensions

LW Christensen, S Estrada, P Thompson - arXiv preprint arXiv:2203.12375, 2022 - arxiv.org
… Z is a cokernel in an acyclic complex of strongly cotorsion modules; we first … flat-cotorsion if
there exists a totally acyclic complex F of flat-… –cotorsion theory, Categorical, Homological and …

Gorenstein flat phantom morphisms

J Asadollahi, S Hemat, R Vahed - Communications in Algebra, 2020 - Taylor & Francis
theory on an additive exact category ( A , E ) . This … acyclic complex F of flat R-modules
is called totally acyclic if, … G F -phantom precover with cotorsion-flat kernel for each R -module. …

Tate cohomology for complexes with finite Gorenstein AC-injective dimension

J Xing, T Zhao, Y Li, J Hu - Bulletin of the Iranian Mathematical Society, 2019 - Springer
… projective, injective and flat modules and developed Gorenstein … }})\) is a complete hereditary
cotorsion pair by [5, Lemma 5.6 … 4, we study the Tate cohomology theories with respect to …

Virtually Gorenstein rings and relative homology of complexes

Z Di, L Liang, J Wang - Journal of Pure and Applied Algebra, 2023 - Elsevier
cotorsion pair ( dg X , Y ) in the category of R ∘ -complexes; … is acyclic for every injective R
∘ -module E. An R-module M is called Gorenstein flat if there exists a F-totally acyclic complex