Derived, coderived, and contraderived categories of locally presentable abelian categories
L Positselski, J Šťovíček - Journal of Pure and Applied Algebra, 2022 - Elsevier
For a locally presentable abelian category B with a projective generator, we construct the
projective derived and contraderived model structures on the category of complexes …
projective derived and contraderived model structures on the category of complexes …
A refinement of Gorenstein flat dimension via the flat–cotorsion theory
We introduce a refinement of the Gorenstein flat dimension for complexes over an
associative ring—the Gorenstein flat-cotorsion dimension—and prove that it, unlike the …
associative ring—the Gorenstein flat-cotorsion dimension—and prove that it, unlike the …
Tilting complexes and codimension functions over commutative noetherian rings
M Hrbek, T Nakamura, J Šťovíček - arXiv preprint arXiv:2207.01309, 2022 - arxiv.org
In the derived category of a commutative noetherian ring, we explicitly construct a silting
object associated with each sp-filtration of the Zariski spectrum satisfying the" slice" …
object associated with each sp-filtration of the Zariski spectrum satisfying the" slice" …
[PDF][PDF] Derived category methods in commutative algebra
LW Christensen, HB Foxby, H Holm - preprint, 2012 - math.ttu.edu
Homological algebra originated in late 19th century topology. Homological studies of
algebraic objects, such as rings and modules, only got under way in the middle of the 20th …
algebraic objects, such as rings and modules, only got under way in the middle of the 20th …
Finitistic dimensions over commutative DG-rings
We study the small and big finitistic projective, injective and flat dimensions over a non-
positively graded commutative noetherian DG-ring $ A $ with bounded cohomology. Our …
positively graded commutative noetherian DG-ring $ A $ with bounded cohomology. Our …
Flat cotorsion modules over Noether algebras
R Kanda, T Nakamura - Documenta Mathematica, 2022 - ems.press
For a module-finite algebra over a commutative noetherian ring, we give a complete
description of flat cotorsion modules in terms of prime ideals of the algebra, as a …
description of flat cotorsion modules in terms of prime ideals of the algebra, as a …
Five theorems on Gorenstein global dimensions
LW Christensen, S Estrada, P Thompson - arXiv preprint arXiv:2203.12375, 2022 - arxiv.org
We expand on two existing characterizations of rings of Gorenstein (weak) global dimension
zero and give two new characterizations of rings of finite Gorenstein (weak) global …
zero and give two new characterizations of rings of finite Gorenstein (weak) global …
Gorenstein flat-cotorsion modules over formal triangular matrix rings
D Wu - 대한수학회보, 2021 - kiss.kstudy.com
Let $ A $ and $ B $ be rings and $ U $ be a $(B, A) $-bimodule. If $ _BU $ has finite flat
dimension, $ U_A $ has finite flat dimension and $\tpa {U}{C} $ is a cotorsion left $ B …
dimension, $ U_A $ has finite flat dimension and $\tpa {U}{C} $ is a cotorsion left $ B …
K‐flat complexes and derived categories
J Gillespie - Bulletin of the London Mathematical Society, 2023 - Wiley Online Library
Let RR be a ring with identity. Inspired by recent work in Emmanouil, Preprint, 2021, we
show that the derived category of RR is equivalent to the chain homotopy category of all K …
show that the derived category of RR is equivalent to the chain homotopy category of all K …
Indecomposable pure-injective objects in stable categories of Gorenstein-projective modules over Gorenstein orders
T Nakamura - arXiv preprint arXiv:2209.15630, 2022 - arxiv.org
We give a result of Auslander-Ringel-Tachikawa type for Gorenstein-projective modules
over a complete Gorenstein order. In particular, we prove that a complete Gorenstein order …
over a complete Gorenstein order. In particular, we prove that a complete Gorenstein order …