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We construct well-behaved extensions of the motivic spectra representing generalized motivic cohomology and connective Balmer--Witt K-theory (among others) to mixed characteristic Dedekind schemes on which 2 is invertible. As a consequence…

K-Theory and Homology · Mathematics 2022-02-02 Tom Bachmann

In this paper we explore the isotropic stable motivic homotopy category constructed from the usual stable motivic homotopy category, following the work of Vishik on isotropic motives (see [29]), by killing anisotropic varieties. In…

Algebraic Geometry · Mathematics 2022-08-08 Fabio Tanania

Ever since the introduction of motivic homotopy theory, as a well-proposed approximation of Grothendieck's dream, algebraic geometers then have the chance to study schemes via a homotopy theory. However topologists also found that lifting…

Algebraic Geometry · Mathematics 2025-12-09 Xin Tong

Inspired by work of Szymik and Wahl on the homology of Higman-Thompson groups, we establish a general connection between ample groupoids, topological full groups, algebraic K-theory spectra and infinite loop spaces, based on the…

Group Theory · Mathematics 2025-02-26 Xin Li

We present a general homotopical analysis of structured diagram spaces and discuss the relation to symmetric spectra. The main motivating examples are the I-spaces, which are diagrams indexed by finite sets and injections, and J-spaces,…

Algebraic Topology · Mathematics 2012-08-29 Steffen Sagave , Christian Schlichtkrull

We study the stable motivic homotopy groups $\pi_{s,w}$ of the 2-completion of the motivic sphere spectrum over $\mathbb{C}$. When arranged in the $(s,w)$-plane, these groups break into four different regions: a vanishing region, an…

Algebraic Topology · Mathematics 2015-05-07 Bogdan Gheorghe , Daniel C. Isaksen

For a variety with a Whitney stratification by affine spaces, we study categories of motivic sheaves which are constant mixed Tate along the strata. We are particularly interested in those cases where the category of mixed Tate motives over…

Representation Theory · Mathematics 2016-03-02 Wolfgang Soergel , Matthias Wendt

We show that the Conjecture of Voevodsky concerning slices of the algebraic cobordism spectrum MGL implies a general statement about the slices of motivic Landweber spectra. In particular it confirms the possible approach suggested by…

Algebraic Topology · Mathematics 2009-04-24 Markus Spitzweck

This paper is the second one in a series of papers about operations in motivic cohomology. Here we show that in the context of smooth schemes over a field of characteristic zero all the bi-stable operations can be obtained in the usual way…

Algebraic Geometry · Mathematics 2010-02-09 Vladimir Voevodsky

A new construction of decomposition smoothness spaces of homogeneous type is considered. The smoothness spaces are based on structured and flexible decompositions of the frequency space $\mathbb{R}^d\backslash\{0\}$. We construct simple…

Functional Analysis · Mathematics 2017-12-20 Zeineb Al-Jawahri , Morten Nielsen

We prove that some of the classical homological stability results for configuration spaces of points in manifolds can be lifted to motivic cohomology.

Algebraic Topology · Mathematics 2023-04-11 Geoffroy Horel , Martin Palmer

Let $X$ be a Noetherian separated scheme of finite Krull dimension. We show that the layers of the slice filtration in the motivic stable homotopy category $\stablehomotopy$ are strict modules over Voevodsky's algebraic cobordism spectrum.…

K-Theory and Homology · Mathematics 2011-04-15 Pablo Pelaez

We show that a triangulated motivic category admits categorical Thom isomorphisms for vector bundles with an additional structure if and only if the generalized motivic cohomology theory represented by the tensor unit object admits Thom…

Algebraic Topology · Mathematics 2021-08-25 Alexey Ananyevskiy

We propose an axiomatic characterization of coarse homology theories defined on the category of bornological coarse spaces. We construct a category of motivic coarse spectra. Our focus is the classification of coarse homology theories and…

Algebraic Topology · Mathematics 2020-04-28 Ulrich Bunke , Alexander Engel

We survey our recent work on an extension of the theory of motivic integration, called arithmetic motivic integration. We developed this theory to understand how p-adic integrals of a very general type depend on p.

Algebraic Geometry · Mathematics 2007-05-23 J. Denef , F. Loeser

We investigate forms of the Hopf invariant one problem in motivic homotopy theory over arbitrary base fields of characteristic not equal to $2$. Maps of Hopf invariant one classically arise from unital products on spheres, and one…

Algebraic Topology · Mathematics 2025-06-11 William Balderrama , Dominic Leon Culver , J. D. Quigley

Let $X$ be a smooth projective curve over a field of characteristic zero and let $D$ be a non-empty set of rational points of $X$. We calculate the motivic classes of moduli stacks of semistable parabolic bundles with connections on $(X,D)$…

Algebraic Geometry · Mathematics 2020-07-28 Roman Fedorov , Alexander Soibelman , Yan Soibelman

Two semisimple algebraic groups of the same type are said to be motivic equivalent if the motives of the associated projective homogeneous varieties of the same type are isomorphic. We give general criteria of motivic equivalence in terms…

Algebraic Geometry · Mathematics 2013-04-02 Charles De Clercq

We consider slice filtrations in logarithmic motivic homotopy theory. Our main results establish conjectured compatibilities with the Beilinson, BMS, and HKR filtrations on (topological, log) Hochschild homology and related invariants. In…

Algebraic Geometry · Mathematics 2025-08-20 Federico Binda , Doosung Park , Paul Arne Østvær

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