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The main focus is the generic freeness of local cohomology modules in a graded setting. The present approach takes place in a quite nonrestrictive setting, by solely assuming that the ground coefficient ring is Noetherian. Under additional…

Commutative Algebra · Mathematics 2020-10-06 Marc Chardin , Yairon Cid-Ruiz , Aron Simis

In this work we further develop a nonlocal calculus theory (initially introduced in [5]) associated with singular fractional-type operators which exhibit kernels with finite support of interactions. The applicability of the framework to…

Analysis of PDEs · Mathematics 2023-11-10 José C. Bellido , Javier Cueto , Mikil Foss , Petronela Radu

The first goal of this paper is to provide an abstract framework in which to formulate and study local duality in various algebraic and topological contexts. For any stable $\infty$-category $\mathcal{C}$ together with a collection of…

Algebraic Topology · Mathematics 2019-01-23 Tobias Barthel , Drew Heard , Gabriel Valenzuela

We establish a noncommutative generalisation of the Borel-Weil theorem for the Heckenberger-Kolb calculi of the quantum Grassmannians. The result is formulated in the framework of quantum principal bundles and noncommutative complex…

Quantum Algebra · Mathematics 2021-04-30 Alessandro Carotenuto , Colin Mrozinski , Réamonn Ó Buachalla

Quantum-mechanical observables for spatial and spacetime localization are considered from a lattice-theoretic perspective. It is shown that when replacing the lattice of all complex orthogonal projections underlying the Born rule by the…

Mathematical Physics · Physics 2026-02-13 Gandalf Lechner , Ivan Romualdo de Oliveira

After an introduction to some basic issues in non-commutative geometry (Gel'fand duality, spectral triples), we present a "panoramic view" of the status of our current research program on the use of categorical methods in the setting of…

Operator Algebras · Mathematics 2012-01-06 Paolo Bertozzini , Roberto Conti , Wicharn Lewkeeratiyutkul

Principal affine open subsets in affine schemes are an important tool in the foundations of algebraic geometry. Given a commutative ring $R$, $\,R$-modules built from the rings of functions on principal affine open subschemes in…

Commutative Algebra · Mathematics 2020-05-27 Leonid Positselski , Alexander Slavik

After introducing a noncommutative counterpart of commutative algebraic geometry based on monoidal categories of quasi-coherent sheaves we show that various constructions in noncommutative geometry (e.g. Morita equivalences, Hopf-Galois…

Algebraic Geometry · Mathematics 2007-07-16 Tomasz Maszczyk

We propose and discuss how basic notions (quadratic modules, positive elements, semialgebraic sets, Archimedean orderings) and results (Positivstellensaetze) from real algebraic geometry can be generalized to noncommutative $*$-algebras. A…

Operator Algebras · Mathematics 2007-09-25 Konrad Schmuedgen

We extend the group-theoretic notion of conditional flatness for a localization functor to any pointed category, and investigate it in the context of homological categories and of semi-abelian categories. In the presence of functorial…

Category Theory · Mathematics 2025-09-15 Marino Gran , Jérôme Scherer

Using the modern perspective of noncommutative algebraic geometry we survey some recent progress in the theory of stability conditions and moduli spaces with applications in hyperk\"ahler geometry and classical algebraic geometry.

Algebraic Geometry · Mathematics 2026-03-02 Laura Pertusi

Derived decompositions of abelian categories are introduced in internal terms of abelian subcategories to construct semi-orthogonal decompositions (or Bousfield localizations, or hereditary torsion pairs) in various derived categories of…

Representation Theory · Mathematics 2018-11-26 Hongxing Chen , Changchang Xi

In this work, we propose to study noncommutative geometry using the language of categories of sheaves of algebras with polynomial identities and their properties, introducing new (graded) noncommutative geometries. These include, for…

Algebraic Geometry · Mathematics 2026-01-30 Lucio Centrone , Maurício Corrêa

In this paper we develop an axiomatic setup for algorithmic homological algebra of Abelian categories. This is done by exhibiting all existential quantifiers entering the definition of an Abelian category, which for the sake of…

Commutative Algebra · Mathematics 2017-10-27 Mohamed Barakat , Markus Lange-Hegermann

We introduce a theory of geometry for nonnoetherian commutative algebras with finite Krull dimension. In particular, we establish new notions of normalization and height: depiction (a special noetherian overring) and geometric codimension.…

Algebraic Geometry · Mathematics 2015-12-24 Charlie Beil

Homotopical localizations with respect to a set of maps are known to exist in cofibrantly generated model categories (satisfying additional assumptions). In this paper we expand the existing framework, so that it will apply to not…

Algebraic Topology · Mathematics 2007-05-23 Boris Chorny

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 finite injective dimension over commutative local DG-rings,…

Commutative Algebra · Mathematics 2020-10-02 Liran Shaul

Within the framework of Connes' noncommutative geometry, we define and study globally non-trivial (or topologically non-trivial) almost-commutative manifolds. In particular, we focus on those almost-commutative manifolds that lead to a…

Mathematical Physics · Physics 2014-11-13 Jord Boeijink , Koen van den Dungen

This paper proposes a general machine learning framework called the localization method, which is fundamentally built on two core concepts: localization kernels and local means -- key components that underpin the self-attention mechanism.…

Machine Learning · Computer Science 2026-05-28 Congwei Song

This article describes local normal forms of functions in noncommuting variables, up to equivalence generated by isomorphism of noncommutative Jacobi algebras, extending singularity theory in the style of Arnold's commutative local normal…

Algebraic Geometry · Mathematics 2025-02-26 Gavin Brown , Michael Wemyss
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