Completion, Čech and local homology and cohomology

P Schenzel, AM Simon - Interactions Between Them. Springer, Cham, 2018 - Springer
Students of mathematics learn how to complete the rational numbers Q using the distance
metric in order to obtain the real numbers R (see eg [24, Chap. 2]). In lectures on number …

[HTML][HTML] On noncommutative bounded factorization domains and prime rings

JP Bell, K Brown, Z Nazemian, D Smertnig - Journal of Algebra, 2023 - Elsevier
A ring has bounded factorizations if every cancellative nonunit a∈ R can be written as a
product of atoms and there is a bound λ (a) on the lengths of such factorizations. The …

Flatness and completion revisited

A Yekutieli - Algebras and Representation Theory, 2018 - Springer
We continue investigating the interaction between flatness and a a-adic completion for
infinitely generated A-modules. Here A is a commutative ring and aa is a finitely generated …

Weak proregularity, derived completion, adic flatness, and prisms

A Yekutieli - Journal of Algebra, 2021 - Elsevier
We begin by recalling the role that weak proregularity of an ideal in a commutative ring has
in derived completion and adic flatness. We also introduce the new concepts of idealistic …

Lectures on non-commutative K3 surfaces, Bridgeland stability, and moduli spaces

E Macrì, P Stellari - Birational Geometry of Hypersurfaces: Gargnano del …, 2019 - Springer
We survey the basic theory of non-commutative K3 surfaces, with a particular emphasis to
the ones arising from cubic fourfolds. We focus on the problem of constructing Bridgeland …

Intrinsic mirror symmetry and categorical crepant resolutions

D Pomerleano - arXiv preprint arXiv:2103.01200, 2021 - arxiv.org
The main result of the present paper concerns finiteness properties of Floer theoretic
invariants on affine log Calabi-Yau varieties $ X $. Namely, we show that:(a) the degree zero …

Cohen-Macaulay differential graded modules and negative Calabi-Yau configurations

H Jin - Advances in Mathematics, 2020 - Elsevier
In this paper, we introduce the class of Cohen-Macaulay (= CM) dg (= differential graded)
modules over Gorenstein dg algebras and study their basic properties. We show that the …

Silting, cosilting, and extensions of commutative ring

S Breaz, M Hrbek, GC Modoi - arXiv preprint arXiv:2204.01374, 2022 - arxiv.org
We study the transfer of (co) silting objects in derived categories of module categories via
the extension functors induced by a morphism of commutative rings. It is proved that the …

[HTML][HTML] Injective DG-modules over non-positive DG-rings

L Shaul - Journal of Algebra, 2018 - Elsevier
Let A be an associative non-positive differential graded ring. In this paper we make a
detailed study of a category Inj (A) of left DG-modules over A which generalizes the category …

The Cohen-Macaulay property in derived commutative algebra

L Shaul - Transactions of the American Mathematical Society, 2020 - ams.org
By extending some basic results of Grothendieck and Foxby about local cohomology to
commutative DG-rings, we prove new amplitude inequalities about finite DG-modules of …