Cohen-Macaulayness of absolute integral closures

B Bhatt - arXiv preprint arXiv:2008.08070, 2020 - arxiv.org
We prove that, modulo any power of a prime $ p $, the absolute integral closure of an
excellent noetherian domain is Cohen-Macaulay. A graded analog is also established …

Grothendieck–Serre in the quasi-split unramified case

K Česnavičius - Forum of Mathematics, Pi, 2022 - cambridge.org
The Grothendieck–Serre conjecture predicts that every generically trivial torsor under a
reductive group scheme G over a regular local ring R is trivial. We settle it in the case when …

Tubular neighborhoods of local models

I Gleason, J Lourenço - Duke Mathematical Journal, 2024 - projecteuclid.org
We show that the v-sheaf local models of Scholze and Weinstein are unibranch. In
particular, this proves that the scheme-theoretic local models defined in Anschütz, Gleason …

Relative vanishing theorems for -schemes

T Murayama - arXiv preprint arXiv:2101.10397, 2021 - arxiv.org
We prove the relative Grauert-Riemenschneider vanishing, Kawamata-Viehweg vanishing,
and Koll\'ar injectivity theorems for proper morphisms of schemes of equal characteristic …

Faltings' annihilator theorem and t-structures of derived categories

R Takahashi - Mathematische Zeitschrift, 2023 - Springer
In this paper, we prove Faltings' annihilator theorem for complexes over a CM-excellent ring.
As an application, we give a complete classification of the t-structures of the bounded …

[PDF][PDF] La conjecture du facteur direct (d'apr\es Y. Andr\'e et B. Bhatt)

G Dospinescu - arXiv preprint arXiv:2302.00955, 2023 - arxiv.org
La conjecture du facteur direct (théorème 1.1 ci-dessous) est un énoncé d'algèbre
commutative presque aussi élémentaire que le Théorème de Fermat et qui est resté ouvert …

Albanese maps for open algebraic spaces

S Schröer - International Mathematics Research Notices, 2024 - academic.oup.com
We show that for each algebraic space that is separated and of finite type over a field, and
whose affinization is connected and reduced, there is a universal morphism to a para …

On almost p-standard system of parameters of idealization and applications

DT Cuong, PH Nam - Journal of Pure and Applied Algebra, 2024 - Elsevier
Let (R, m) be a Noetherian local ring and M be a finitely generated R-module. In this paper,
we construct almost p-standard systems of parameters (a strict subclass of d-sequences) of …

Classifying preaisles of derived categories of complete intersections

R Takahashi - arXiv preprint arXiv:2309.06074, 2023 - arxiv.org
Let $ R $ be a commutative noetherian ring. Denote by $\operatorname {mod} R $ the
category of finitely generated $ R $-modules, by $\operatorname {D^ b}(R) $ the bounded …

Asymptotic stability of depths of localizations of modules

K Kimura - Journal of the Mathematical Society of Japan, 2024 - projecteuclid.org
Let R be a commutative Noetherian ring, I an ideal of R, and M a finitely generated R-
module. The asymptotic behavior of the quotient modules M/InM of M is an actively studied …