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We determine higher topological Hochschild homology of rings of integers in number fields with coefficients in suitable residue fields. We use the iterative description of higher THH for this and Postnikov arguments that allow us to reduce…

Algebraic Topology · Mathematics 2021-09-03 Bjørn Ian Dundas , Ayelet Lindenstrauss , Birgit Richter

We study the Hochschild and cyclic homologies of noncommutative monogenic extensions. As an aplication we compute the Hochschild and cyclic homologies of the rank~1 Hopf algebras introduced by L. Krop and D. Radford in [Finite dimensional…

K-Theory and Homology · Mathematics 2007-05-23 Graciela Carboni , Jorge A. Guccione , Juan J. Guccione

A modular category $\mathcal{C}$ gives rise to a differential graded modular functor, i.e. a system of projective mapping class group representations on chain complexes. This differential graded modular functor assigns to the torus the…

Quantum Algebra · Mathematics 2023-07-03 Christoph Schweigert , Lukas Woike

We introduce a class of Higgs bundles called cyclic which lie in the Hitchin component of representations of a compact Riemann surface into the split real form of a simple Lie group. We then prove that such a Higgs bundle is equivalent to a…

Differential Geometry · Mathematics 2015-01-27 David Baraglia

We prove that real topological Hochschild homology THR for schemes with involution satisfies base change and descent for the Z/2-isovariant \'etale topology. As an application, we provide computations for the projective line (with and…

K-Theory and Homology · Mathematics 2024-05-15 Jens Hornbostel , Doosung Park

This paper provides a homotopical version of the adjoint lifting theorem in category theory, allowing for Quillen equivalences to be lifted from monoidal model categories to categories of algebras over colored operads. The generality of our…

Algebraic Topology · Mathematics 2020-06-16 David White , Donald Yau

We introduce the notion of an algebraic cocycle as the algebraic analogue of a map to an Eilenberg-MacLane space. Using these cocycles we develop a ``cohomology theory" for complex algebraic varieties. The theory is bigraded, functorial,…

Algebraic Geometry · Mathematics 2016-09-06 Eric M. Friedlander , H. Blaine Lawson

We prove an equivariant localization theorem over an algebraically closed field of characteristic zero for smooth quotient stacks by reductive groups $X/G$ in the setting of derived loop spaces as well as Hochschild homology and its cyclic…

Algebraic Geometry · Mathematics 2023-01-12 Harrison Chen

We prove a Hochschild-Kostant-Rosenberg theorem ("the HKR theorem") which computes the factorization homology of certain smooth commutative ring spectra. In doing so we fix and generalize a THH computation which was first conceived as the…

Algebraic Topology · Mathematics 2023-11-17 Hari Rau-Murthy

We propose a generalization of Sullivan's de Rham homotopy theory to non-simply connected spaces. The formulation is such that the real homotopy type of a manifold should be the closed tensor dg-category of flat bundles on it much the same…

Algebraic Topology · Mathematics 2020-03-09 Syunji Moriya

In this paper we establish Koszul duality between dg categories and a class of curved coalgebras, generalizing the corresponding result for dg algebras and conilpotent curved coalgebras. We show that the normalized chain complex functor…

Category Theory · Mathematics 2024-01-29 Julian Holstein , Andrey Lazarev

This paper provides an extensive study of the homotopy theory of types of algebras with units, like unital associative algebras or unital commutative algebras for instance. To this purpose, we endow the Koszul dual category of curved…

Algebraic Topology · Mathematics 2019-05-29 Brice Le Grignou

In this paper we prove that Toen's derived enrichment of the model category of dg-categories defined by Tabuada, is computed by the dg-category of A-infinity functors. This approach was suggested by Kontsevich. We further put this…

K-Theory and Homology · Mathematics 2014-12-04 Giovanni Faonte

We formulate a connection between a topological and a geometric category. The former is the idempotent completion of the (horizontal) trace of the affine Hecke category, while the latter is the equivariant derived category of the…

Geometric Topology · Mathematics 2024-12-10 Eugene Gorsky , Andrei Neguţ

We compute topological Hochschild homology of sufficiently structured forms of truncated Brown--Peterson spectra with coefficients. In particular, we compute $\mathrm{THH}_*(B\langle n\rangle ;H\mathbb{Z}_{(p)})$ for all $n$ and…

Algebraic Topology · Mathematics 2024-08-28 Gabriel Angelini-Knoll , Dominic Leon Culver , Eva Höning

We show that the homotopy category of commutative algebra spectra over the Eilenberg-Mac Lane spectrum of the integers is equivalent to the homotopy category of E-infinity-monoids in unbounded chain complexes. We do this by establishing a…

Algebraic Topology · Mathematics 2018-03-16 Birgit Richter , Brooke Shipley

We extend the notions of Hochschild and cyclic homology to morphisms from algebraic spaces to algebraic stacks. Using this, we obtain generalizations to log schemes in the sense of Fontaine and Illusie of these homology theories.

Algebraic Geometry · Mathematics 2026-05-27 Martin Olsson

In this paper, we construct a Real equivariant version of the B\"okstedt spectral sequence which takes inputs in the theory of Real Hochschild homology developed by Angelini-Knoll, Gerhardt, and Hill and converges to the equivariant…

Algebraic Topology · Mathematics 2024-08-15 Chloe Lewis

In this article, we suggest a categorification procedure in order to capture an analogy between Crystalline Grothendieck-Lefschetz trace formula and the cyclotomic trace map $K\rightarrow TC$ from the algebraic $K$-theory to the topological…

Algebraic Topology · Mathematics 2015-03-03 Ilias Amrani

We construct a Goodwillie tower of categories which interpolates between the category of pointed spaces and the category of spectra. This tower of categories refines the Goodwillie tower of the identity functor in a precise sense. More…

Algebraic Topology · Mathematics 2018-07-26 Gijs Heuts