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A stable model category is a setting for homotopy theory where the suspension functor is invertible. The prototypical examples are the category of spectra in the sense of stable homotopy theory and the category of unbounded chain complexes…

Algebraic Topology · Mathematics 2017-12-04 Stefan Schwede , Brooke Shipley

We describe the distribution of infinite groups in the $RO(G)$-graded stable homotopy groups of spheres for a finite group $G$.

Algebraic Topology · Mathematics 2022-05-20 J. P. C. Greenlees , J. D. Quigley

This paper investigates when local cohomology modules have an annihilator that does not depend on the choice of an ideal. Takahashi classified the dominant resolving subcategories of the category of finitely generated modules over a…

Commutative Algebra · Mathematics 2021-08-27 Takeshi Yoshizawa

We show an equivalence of categories, over general $p$-adic bases, between finite locally $p^n$-torsion commutative group schemes and $\Int/p^n\Int$-modules in perfect $F$-gauges of Tor amplitude $[-1,0]$ with Hodge-Tate weights $0,1$. By…

Number Theory · Mathematics 2025-09-03 Keerthi Madapusi , Shubhodip Mondal

We show that silting modules are closely related with localisations of rings. More precisely, every partial silting module gives rise to a localisation at a set of maps between countably generated projective modules and, conversely, every…

Representation Theory · Mathematics 2019-04-12 Frederik Marks , Jan Stovicek

We investigate to what extent we can descend the classification of localizing, smashing and thick ideals in a presentably symmetric monoidal stable $\infty$-category $\mathscr{C}$ along a descendable commutative algebra $A$. We establish…

Category Theory · Mathematics 2023-05-04 Tobias Barthel , Natalia Castellana , Drew Heard , Niko Naumann , Luca Pol , Beren Sanders

In this paper we prove that the cohomology groups with compact support of stacks of shtukas are modules of finite type over a Hecke algebra. As an application, we extend the construction of excursion operators, defined by V. Lafforgue on…

Algebraic Geometry · Mathematics 2024-04-17 Cong Xue

Torsion pairs in the category of finitely presented modules over a noetherian ring can be parametrised by the class of cosilting modules. In this paper, we characterise such modules in terms of their indecomposable summands, providing a new…

Representation Theory · Mathematics 2019-11-07 Karin Baur , Rosanna Laking

This paper is a sequel to "Localization of $\frak{u}$-modules. I", hep-th/9411050. We are starting here the geometric study of the tensor category $\cal{C}$ associated with a quantum group (corresponding to a Cartan matrix of finite type)…

q-alg · Mathematics 2008-02-03 M. Finkelberg , V. Schechtman

We study complexes of stable $\infty$-categories, referred to as categorical complexes. As we demonstrate, examples of such complexes arise in a variety of subjects including representation theory, algebraic geometry, symplectic geometry,…

Algebraic Geometry · Mathematics 2024-02-16 Merlin Christ , Tobias Dyckerhoff , Tashi Walde

We give a necessary and sufficient condition in terms of group cohomology for two indecomposable module categories over a group-theoretical fusion category ${\mathcal C}$ to be equivalent. This concludes the classification of such module…

Quantum Algebra · Mathematics 2017-06-20 Sonia Natale

We classify thick tensor ideals of finite objects in the category of rational torus-equivariant spectra, showing that they are completely determined by geometric isotropy. This is essentially equivalent to showing that the Balmer spectrum…

Algebraic Topology · Mathematics 2016-12-07 J. P. C. Greenlees

We extend \cite{G} to the nonsemisimple case. We define and study exact factorizations $\B=\A\bullet \C$ of a finite tensor category $\B$ into a product of two tensor subcategories $\A,\C\subset \B$, and relate exact factorizations of…

Quantum Algebra · Mathematics 2022-02-17 Tathagata Basak , Shlomo Gelaki

Let $X$ be a topological space with Noetherian mod $p$ cohomology and let $C^*(X;\mathbb{F}_p)$ be the commutative ring spectrum of $\mathbb{F}_p$-valued cochains on $X$. The goal of this paper is to exhibit conditions under which the…

Algebraic Topology · Mathematics 2021-08-05 Tobias Barthel , Natalia Castellana , Drew Heard , Gabriel Valenzuela

We investigate infinite dimensional modules for a linear algebraic group $\mathbb G$ over a field of positive characteristic $p$. For any subcoalgebra $C \subset \mathcal O(\mathbb G)$ of the coordinate algebra of $\mathbb G$, we consider…

Representation Theory · Mathematics 2024-06-19 Eric M. Friedlander

As a localizing invariant, THH participates in localization sequences of cyclotomic spectra. We resolve a conjecture of Rognes by relating these to residue sequences in logarithmic THH. Consequently, logarithmic THH, TR, and TC serve as…

Algebraic Topology · Mathematics 2025-06-18 Tommy Lundemo

We classify the subvarieties of infinite dimensional affine space that are stable under the infinite symmetric group. We determine the defining equations and point sets of these varieties as well as the containments between them.

Algebraic Geometry · Mathematics 2021-06-15 Rohit Nagpal , Andrew Snowden

For a finite group $G$ and an arbitrary commutative ring $R$, Brou\'e has placed a Frobenius exact structure on the category of finitely generated $RG$-modules by taking the exact sequences to be those that split upon restriction to the…

Representation Theory · Mathematics 2017-06-09 Shawn Baland , Alexandru Chirvasitu , Greg Stevenson

In this paper, we will provide constructions of D-module structures on the complex computing the periodic cyclic homology of a stable infinity-category defined over a scheme of characteristic zero. We give two methods. The first one is…

Algebraic Geometry · Mathematics 2022-03-01 Isamu Iwanari

The (co)completeness problem for the (projectively) stable module category of an associative ring is studied. (Normal) monomorphisms and (normal) epimorphisms in such a category are characterized. As an application, we give a criterion for…

Rings and Algebras · Mathematics 2015-01-06 Alex Martsinkovsky , Dali Zangurashvili
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