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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 construct special cycles on the moduli stack of unitary shtukas. We prove an identity between (1) the r-th central derivative of non-singular Fourier coefficients of a normalized Siegel--Eisenstein series, and (2) the degree of special…

Number Theory · Mathematics 2023-11-30 Tony Feng , Zhiwei Yun , Wei Zhang

This work studies conditions under which integral transforms induce exact functors on singularity categories between schemes that are proper over a Noetherian base scheme. A complete characterization for this behavior is provided, which…

Algebraic Geometry · Mathematics 2025-09-16 Uttaran Dutta , Pat Lank , Kabeer Manali Rahul

It is proved that the category of simplicial complete bornological spaces over $\mathbb R$ carries a combinatorial monoidal model structure satisfying the monoid axiom. For any commutative monoid in this category the category of modules is…

Differential Geometry · Mathematics 2017-07-31 Dennis Borisov , Kobi Kremnizer

Following Krause \cite{Kr}, we prove Krull-Schmidt type decomposition theorems for thick subcategories of various triangulated categories including the derived categories of rings, Noetherian stable homotopy categories, stable module…

Algebraic Topology · Mathematics 2011-01-04 Sunil K. Chebolu

We prove that one can realize certain triangulated subcategories of the singularity category of a complete intersection as homotopy categories of matrix factorizations. Moreover, we prove that for any commutative ring and non-zerodivisor,…

Commutative Algebra · Mathematics 2015-09-15 Petter Andreas Bergh , David A. Jorgensen

This work presents a range of triangulated characterizations for important classes of singularities such as derived splinters, rational singularities, and Du Bois singularities. An invariant called 'level' in a triangulated category can be…

Algebraic Geometry · Mathematics 2025-03-05 Pat Lank , Sridhar Venkatesh

Stable equivalences of Morita type preserve many interesting properties and is proved to be the appropriate concept to study for equivalences between stable categories. Recently the singularity category attained much attraction and Xiao-Wu…

Representation Theory · Mathematics 2013-01-23 Guodong Zhou , Alexander Zimmermann

We prove a rank-finiteness conjecture for modular categories: up to equivalence, there are only finitely many modular categories of any fixed rank. Our technical advance is a generalization of the Cauchy theorem in group theory to the…

Quantum Algebra · Mathematics 2015-11-13 Paul Bruillard , Siu-Hung Ng , Eric C. Rowell , Zhenghan Wang

For a finite quiver without sources or sinks, we prove that the homotopy category of acyclic complexes of injective modules over the corresponding finite dimensional algebra with radical square zero is triangle equivalent to the derived…

Representation Theory · Mathematics 2015-12-09 Xiao-Wu Chen , Dong Yang

Over a Cohen-Macaulay ring we consider two extensions of the maximal Cohen-Macaulay modules from the viewpoint of definable subcategories, which are closed under direct limits, direct products and pure submodules. After describing these…

Representation Theory · Mathematics 2019-11-13 Isaac Bird

This paper is a sequel to [He11] and [GH17]. In [He11] a notion of marking of isolated hypersurface singularities was defined, and a moduli space $M_\mu^{mar}$ for marked singularities in one $\mu$-homotopy class of isolated hypersurface…

Algebraic Geometry · Mathematics 2017-10-11 Falko Gauss , Claus Hertling

We review three examples of functors from Lorentzian categories and their applications in finiteness results, singularity theorems and boundary constructions. The third example is a novel functor from the category of ordered measure spaces…

Differential Geometry · Mathematics 2023-02-22 Olaf Müller

We aim to study Morita theory for tensor triangulated categories. For two finite tensor categories having no projective simple objects, we prove that their stable equivalence induced by an exact $\Bbbk$-linear monoidal functor can be lifted…

Quantum Algebra · Mathematics 2022-09-07 Yuying Xu , Gongxiang Liu

We show that the category of finite-dimensional modules over the endomorphism algebra of a rigid object in a Hom-finite triangulated category is equivalent to the Gabriel-Zisman localisation of the category with respect to a certain class…

Representation Theory · Mathematics 2020-12-21 Aslak Bakke Buan , Bethany Marsh

We classify all tilting and cotilting classes over commutative noetherian rings in terms of descending sequences of specialization closed subsets of the Zariski spectrum. Consequently, all resolving subcategories of finitely generated…

Commutative Algebra · Mathematics 2014-06-03 Lidia Angeleri Hügel , David Pospisil , Jan Stovicek , Jan Trlifaj

This article investigates strong generation within the module category of a commutative Noetherian ring. We establish a criterion for such rings to possess strong generators within their module category, addressing a question raised by…

Commutative Algebra · Mathematics 2025-08-08 Souvik Dey , Pat Lank , Ryo Takahashi

We consider compactifications of the space of triples of distinct points in projective $n$-space. One such space is a singular variety of configurations of points and lines; another is the smooth compactification of Fulton and MacPherson;…

alg-geom · Mathematics 2007-06-06 Wilberd van der Kallen , Peter Magyar

We investigate the triangulated structure of stable monomorphism categories (filtered chain categories) over a Frobenius category. The high degree of symmetry of linear quivers leads to a plethora of semiorthogonal decompositions into…

Category Theory · Mathematics 2026-04-27 Jonas Frank , Mathias Schulze

Let $R$ be a commutative Noetherian ring with identity (not necessarily local) and $\frak a$ a proper ideal of $R$. We study the invariance of some classes of $\frak a$-relative Cohen-Macaulay modules under pure ring homomorphisms and ring…

Commutative Algebra · Mathematics 2022-12-26 Parisa Pourghobadian , Kamran Divaani-Aazar , Ahad Rahimi