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We study the logarithmic topological Hochschild homology of ring spectra with logarithmic structures and establish localization sequences for this theory. Our results apply, for example, to connective covers of periodic ring spectra like…

Algebraic Topology · Mathematics 2015-10-20 John Rognes , Steffen Sagave , Christian Schlichtkrull

We define a motivic Greenlees spectral sequence by characterising an associated $t$-structure. We then examine a motivic version of topological Hochschild homology for the motivic cohomology spectrum modulo a prime number $p$. Finally, we…

Algebraic Topology · Mathematics 2024-08-02 Federico Ernesto Mocchetti

The Hochschild cohomology of a differential graded algebra, or a differential graded category, admits a natural map to the graded center of its homology category: the characteristic homomorphism. We interpret it as an edge homomorphism in a…

Representation Theory · Mathematics 2017-06-19 Frank Neumann , Markus Szymik

We construct a spectral sequence associated to a stratified space, which computes the compactly supported cohomology groups of an open stratum in terms of the compactly supported cohomology groups of closed strata and the reduced cohomology…

Algebraic Topology · Mathematics 2017-06-14 Dan Petersen

The Hom closed colocalising subcategories of the stable module category of a finite group scheme are classified. This complements the classification of the tensor closed localising subcategories in our previous work. Both classifications…

Representation Theory · Mathematics 2017-06-14 Dave Benson , Srikanth B. Iyengar , Henning Krause , Julia Pevtsova

This thesis is comprised of three chapters. The first chapter deals with bounded complexes of Gorenstein projective and Gorenstein injective modules. Deploying methods of relative homological algebra, we approximate such complexes with…

Commutative Algebra · Mathematics 2020-10-08 Hossein Faridian

We present a general theorem which computes the cohomology of a homological vector field on global sections of vector bundles over smooth affine supervarieties. The hypotheses and results have the clear flavor of a localization theorem.

Representation Theory · Mathematics 2025-04-28 Vera Serganova , Alexander Sherman

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 prove a sheaf-theoretic derived-category generalization of Greenlees-May duality (a far-reaching generalization of Grothendieck's local duality theorem): for a quasi-compact separated scheme X and a "proregular" subscheme Z---for…

alg-geom · Mathematics 2008-02-03 Leovigildo Alonso , Ana Jeremías , Joseph Lipman

We discuss the relationship between (co)homology groups and categorical diagonalization. We consider the category of chain complexes in the category of finitely generated free modules on a commutative ring. For a fixed chain complex with…

Category Theory · Mathematics 2021-01-06 Jumpei Gohara , Yuji Hirota , Keisui Ino , Akifumi Sako

We use the abstract framework constructed in our earlier paper to study local duality for Noetherian $\mathbb{E}_{\infty}$-ring spectra. In particular, we compute the local cohomology of relative dualizing modules for finite morphisms of…

Algebraic Topology · Mathematics 2017-05-17 Tobias Barthel , Drew Heard , Gabriel Valenzuela

A parametrized spectrum E is a family of spectra E_x continuously parametrized by the points x of a topological space X. We take the point of view that a parametrized spectrum is a bundle-theoretic geometric object. When R is a ring…

Algebraic Topology · Mathematics 2017-02-28 John Lind

We construct an analogue of the Lyndon-Hochschild-Serre spectral sequence in the context of polynomial cohomology, for group extensions. If G is an extension of Q by H, then the spectral sequence converges to the polynomial cohomology of G.…

K-Theory and Homology · Mathematics 2012-12-12 Bobby W. Ramsey

We generalize the notion of a bornology by omitting the condition that a one-point-subset is bounded and obtain a complete and co-complete generalization of the category of bornological coarse spaces. Then we imitate the construction of…

Algebraic Topology · Mathematics 2019-07-10 Daniel Heiss

We construct a multiplicative spectral sequence converging to the cohomology algebra of the diagonal complex of a bisimplicial set with coefficients in a field. The construction provides a spectral sequence converging to the cohomology…

Algebraic Topology · Mathematics 2024-05-20 Katsuhiko Kuribayashi

We study homotopy theory of the category of spectral sequences with respect to the class of weak equivalences given by maps which are quasi-isomorphisms on a fixed page. We introduce the category of extended spectral sequences and show that…

Algebraic Topology · Mathematics 2026-03-25 Muriel Livernet , Sarah Whitehouse

Using methods developed by Franke, we obtain algebraic classification results for modules over certain symmetric ring spectra ($S$-algebras). In particular, for any symmetric ring spectrum $R$ whose graded homotopy ring $\pi_*R$ has graded…

Algebraic Topology · Mathematics 2014-10-01 Irakli Patchkoria

We define the Chern map from the Grothendieck group of a linear category C to the de Rham cohomology of C with coefficients in a DG-category. In order to achieve our goal, we define the notion of connection on a C-module, and we show that…

K-Theory and Homology · Mathematics 2011-12-20 Andrei Chiteş , Mădălin Ciungu , Dragoş Ştefan

For a commutative noetherian ring R, we investigate relations between tilting and cotilting modules in Mod-R and Mod-R_m where m runs over the maximal spectrum of R. For each finite n, we construct a 1-1 correspondence between (equivalence…

Commutative Algebra · Mathematics 2019-01-08 Jan Trlifaj , Serap Sahinkaya

The main result of the paper states that for a graded ideal I in a polynomial ring R over a field of characteristic 0, the Hilbert functions of the local cohomology modules of R/I and of R/Gin(I) coincide if and only if R/I is sequentially…

Commutative Algebra · Mathematics 2007-05-23 Juergen Herzog , Enrico Sbarra