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Related papers: Milnor-Witt Motives

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In the first half of this article we define a new weight homology functor on Voevodsky's category of effective motives, and investigate some of its properties. In special cases we recover Gillet-Soul\'e's weight homology, and Geisser's…

Algebraic Geometry · Mathematics 2014-11-24 Shane Kelly , Shuji Saito

We construct a comparison functor between ($\mathbf{A}^1$-local) tame motives and ($\overline{\square}$-local) log-\'etale motives over a field $k$ of positive characteristic. This generalizes Binda--Park--{\O}stv{\ae}r's comparison for the…

Algebraic Geometry · Mathematics 2025-06-27 Alberto Merici

We define a theory of etale motives over a noetherian scheme. This provides a system of categories of complexes of motivic sheaves with integral coefficients which is closed under the six operations of Grothendieck. The rational part of…

Algebraic Geometry · Mathematics 2019-02-20 Denis-Charles Cisinski , Frédéric Déglise

In this paper we study a model structure on a category of schemes with a group action and the resulting unstable and stable equivariant motivic homotopy theories. The new model structure introduced here samples a comparison to the one by…

Algebraic Topology · Mathematics 2013-12-03 Philip Herrmann

Ananyevsky has recently computed the stable operations and cooperations of rational Witt theory. These computations enable us to show a motivic analog of Serre's finiteness result: Theorem: Let $k$ be a field. Then $\pi^{\mathbb{A}^1}_…

Algebraic Topology · Mathematics 2017-05-04 Alexey Ananyevskiy , Marc Levine , Ivan Panin

We compute the perverse delta-homotopy heart of the motivic stable homotopy category over a base scheme with a dimension function delta, rationally or after inverting the exponential characteristic in the equicharacteristic case. In order…

Algebraic Geometry · Mathematics 2022-11-01 Frédéric Déglise , Niels Feld , Fangzhou Jin

We provide a decomposition of the equivariant Milnor-Witt motives for the moduli spaces of stable curves $\overline{\mathcal{M}}_{1,2}$.

Algebraic Geometry · Mathematics 2026-05-19 Nanjun Yang

We give a new proof of the fact that Milnor-Witt K-theory has geometric transfers. The proof yields to a simplification of Morel's conjecture about transfers on contracted homotopy sheaves.

Algebraic Geometry · Mathematics 2020-11-04 Niels Feld

We prove that for a finitely generated field over an infinite perfect field k, and for any integer n, the (n,n)-th MW-motivic cohomology group identifies with the n-th Milnor-Witt K-theory group of that field

K-Theory and Homology · Mathematics 2017-08-22 Baptiste Calmès , Jean Fasel

The aim of this work is to construct certain homotopy t-structures on various categories of motivic homotopy theory, extending works of Voevodsky, Morel, D\'eglise and Ayoub. We prove these $t$-structures possess many good properties, some…

Algebraic Geometry · Mathematics 2016-12-30 Frédéric Déglise , Mikhail Bondarko

We present a research programme aimed at constructing classifying toposes of Weil-type cohomology theories and associated categories of motives, and introduce a number of notions and preliminary results already obtained in this direction.…

Algebraic Geometry · Mathematics 2015-07-23 Olivia Caramello

We introduce in this work the notion of the category of pure $\mathbf{E}$-Motives, where $\mathbf{E}$ is a motivic strict ring spectrum and construct twisted $\mathbf{E}$-cohomology by using six functors formalism of J. Ayoub. In…

K-Theory and Homology · Mathematics 2017-04-26 Le Dang Thi Nguyen

In this article we further the study of non-commutative motives. We prove that bivariant cyclic cohomology (and its variants) becomes representable in the category of non-commutative motives. Furthermore, Connes' bilinear pairings…

K-Theory and Homology · Mathematics 2011-01-04 Goncalo Tabuada

We consider proper, algebraic semismall maps f from a complex algebraic manifold X. We show that the topological Decomposition Theorem implies a "motivic" decomposition theorem for the rational algebraic cycles of X and, in the case X is…

Algebraic Geometry · Mathematics 2007-05-23 Mark Andrea A. de Cataldo , Luca Migliorini

We establish the complete classification of Chow motives of projective homogeneous varieties for $p$-inner semi-simple algebraic groups, with coefficients in $\mathbb{Z}/p\mathbb{Z}$. Our results involve a new motivic invariant, the Tate…

Algebraic Geometry · Mathematics 2024-07-02 Charles De Clercq , Anne Quéguiner-Mathieu

We prove a new convergence result for the slice spectral sequence, following work by Levine and Voevodsky. This verifies a derived variant of Voevodsky's conjecture on convergence of the slice spectral sequence. This is, in turn, a…

K-Theory and Homology · Mathematics 2021-10-05 Tom Bachmann , Elden Elmanto , Paul Arne Østvær

We prove a mixed characteristic analog of the Beilinson-Lichtenbaum Conjecture for p-adic motivic cohomology. It gives a description, in the stable range, of p-adic motivic cohomology (defined using algebraic cycles) in terms of…

Algebraic Geometry · Mathematics 2016-04-19 Veronika Ertl , Wieslawa Niziol

This paper is concerned with an interpretation of f-cohomology, a modification of motivic cohomology of motives over number fields, in terms of motives over number rings. Under standard assumptions on mixed motives over finite fields,…

Algebraic Geometry · Mathematics 2015-03-17 Jakob Scholbach

In this paper, we compute the (total) Milnor-Witt motivic cohomology of the complement of a hyperplane arrangement in an affine space as an algebra with given generators and relations. We also obtain some corollaries by realization to…

Algebraic Geometry · Mathematics 2023-11-15 Keyao Peng

These notes develop the foundations of Milnor-Witt K-theory for fields of arbitrary characteristic, without any perfectness assumptions. Extending the work of Morel and Feld, we establish all functorial properties of Milnor-Witt K-theory…

Algebraic Geometry · Mathematics 2025-10-21 Frédéric Déglise