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In the derived category of a commutative noetherian ring, we explicitly construct a silting object associated with each sp-filtration of the Zariski spectrum satisfying the "slice" condition. Our new construction is based on local…

Commutative Algebra · Mathematics 2025-10-08 Michal Hrbek , Tsutomu Nakamura , Jan Šťovíček

We give a condition which characterises those weight structures on a derived category which come from a Thomason filtration on the underlying scheme. Weight structures satisfying our condition will be called $\otimes ^c$-weight structures.…

Algebraic Geometry · Mathematics 2022-11-07 Umesh V Dubey , Gopinath Sahoo

For a commutative noetherian ring A, we compare the support of a complex of A-modules with the support of its cohomology. This leads to a classification of all full subcategories of A-modules which are thick (that is, closed under taking…

Commutative Algebra · Mathematics 2007-05-23 Henning Krause

We study the derived categories of small categories over commutative noetherian rings. Our main result is a parametrization of the localizing subcategories in terms of the spectrum of the ring and the localizing subcategories over residue…

Representation Theory · Mathematics 2016-06-22 Benjamin Antieau , Greg Stevenson

We classify complactly generated t-structures on the derived category of modules over a commutative Noetherian ring R in terms of decreasing filtrations by supports on Spec(R). A decreasing filtration by supports \phi : Z -> Spec(R)…

Algebraic Geometry · Mathematics 2017-04-27 Leovigildo Alonso , Ana Jeremias , Manuel Saorin

Given a compactly generated triangulated category $\mathcal{T}$ equipped with an action of a graded-commutative Noetherian ring $R$, generalizing results of Letz, we prove a general result concerning the openness with respect to levels of…

Commutative Algebra · Mathematics 2025-05-21 Souvik Dey , Jian Liu , Liran Shaul

We introduce the notions of Koszul $N$-complex, $\check{\mathrm{C}}$ech $N$-complex and telescope $N$-complex, explicit derived torsion and derived completion functors in the derived category $\mathbf{D}_N(R)$ of $N$-complexes using the…

Commutative Algebra · Mathematics 2020-06-24 Xiaoyan Yang

Given a monoidal triangulated category $T$ with noetherian spectrum, we show that there is an order preserving bijection between the collection of all Thomason subsets of the non-commutative spectrum $\mathrm{Spc}(T)$ and the collection of…

Category Theory · Mathematics 2024-09-18 James Rowe

Let $R$ be a commutative Noetherian ring and let $\mathcal D(R)$ be its (unbounded) derived category. We show that all compactly generated t-structures in $\mathcal D(R)$ associated to a left bounded filtration by supports of Spec$(R)$ have…

Category Theory · Mathematics 2015-09-14 Carlos E. Parra , Manuel Saorín

Mutations occur in multiple algebraic contexts, often enjoying good combinatorial properties. In this paper we study mutations of pure-injective cosilting objects in compactly generated triangulated categories from a topological point of…

Representation Theory · Mathematics 2025-03-21 Michal Hrbek , Sergio Pavon , Jorge Vitória

We prove that given any strong, stable derivator and a $t$-structure on its base triangulated category $\cal D$, the $t$-structure canonically lifts to all the (coherent) diagram categories and each incoherent diagram in the heart uniquely…

Category Theory · Mathematics 2023-10-27 Manuel Saorín , Jan Šťovíček , Simone Virili

We study categories of dualizable torsion and complete objects for compactly-rigidly generated tensor-triangulated categories T with a Noetherian central action of a graded commutative Noetherian ring R. We show that they always admit a…

Category Theory · Mathematics 2025-12-05 Jun Maillard , Jan Šťovíček

We show that, under particular conditions, if a t-structure in the unbounded derived category of a locally coherent Grothendieck category restricts to the bounded derived category of its category of finitely presented objects, then its…

Category Theory · Mathematics 2017-02-09 Manuel Saorín

For a locally finitely presented Grothendieck category $\mathcal{A}$, we consider a certain subcategory of the homotopy category of FP-injective objects in $\mathcal{A}$ which we show is compactly generated. In the case where $\mathcal{A}$…

Rings and Algebras · Mathematics 2018-03-06 Georgios Dalezios

For any graded commutative noetherian ring, where the grading group is abelian and where commutativity is allowed to hold in a quite general sense, we establish an inclusion-preserving bijection between, on the one hand, the twist-closed…

Category Theory · Mathematics 2012-11-07 Ivo Dell'Ambrogio , Greg Stevenson

Given a suitable Noetherian scheme, we classify tensor $t$-structures on the bounded derived category of coherent sheaves and its variants with prescribed support. Furthermore, we show that the existence of such $t$-structures restricting…

Algebraic Geometry · Mathematics 2026-05-19 Alexander Clark , Pat Lank , Kabeer Manali-Rahul , Chris J. Parker

We give an overview of recent developments in silting theory. After an introduction on torsion pairs in triangulated categories, we discuss and compare different notions of silting and explain the interplay with t-structures and…

Representation Theory · Mathematics 2019-06-19 Lidia Angeleri Hügel

We obtain a theorem which allows to prove compact generation of derived categories of Grothendieck categories, based upon certain coverings by localizations. This theorem follows from an application of Rouquier's cocovering theorem in the…

K-Theory and Homology · Mathematics 2012-04-17 Wendy Lowen , Michel Van den Bergh

We develop the theory of stratification for a rigidly-compactly generated tensor-triangulated category using the smashing spectrum and the small smashing support. Within the stratified context, we investigate connections between big prime…

Category Theory · Mathematics 2023-10-19 Charalampos Verasdanis

Let A be a commutative ring, and \a a weakly proregular ideal in A. This includes the noetherian case: if A is noetherian then any ideal in it is weakly proregular; but there are other interesting examples. In this paper we prove the MGM…

Commutative Algebra · Mathematics 2012-10-17 Marco Porta , Liran Shaul , Amnon Yekutieli