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Chow-Witt Groups, Tensor triangular geometry, and Milnor-Witt motives / von Jule Marie Hänel. Wuppertal, 2024
Inhalt
Introduction
Motivation
Outline
Acknowledgements
Tensor Triangular Geometry and Dualities
Foundations
Rigid Tensor Triangulated Categories
Dimension Functions and Filtrations
Grothendieck–Witt and Witt Groups
(Grothendieck–)Witt Groups of Triangulated Categories
(Grothendieck–)Witt Groups of Exact Categories
Localization
Tensor Triangular Chow–Witt Groups
Tensor Triangular Chow Groups
Chow–Witt Groups of a Scheme
Tensor Triangular Chow–Witt Groups
Idea
Construction and Definition
Agreement with Algebraic Geometry
Reformulation of Classical Oriented Cocycles
Reformulation of Classical Oriented Coboundaries
Agreement of Chow–Witt Groups
Functoriality
Chow(–Witt) Groups for Tensor Triangular Categories with Models
Computations in Modular Representation Theory
The Stable Module Category
Recollection on Group Rings
Construction of kG`3́9`42`"̇613A``45`47`"603Astab
The (Grothendieck–)Witt Group of kG`3́9`42`"̇613A``45`47`"603Astab
Tensor Triangular Chow–Witt Groups for G=Z/pnZ
Tensor Triangular Chow Groups for G=Z/pZZ/pZ
Tensor Triangular Chow–Witt Groups for G=Z/pZZ/pZ
The Spectrum of Artin Motives
The Derived Category of Motives
Artin Motives, Mackey Functors, and Permutation Modules
The Derived Category of Artin Milnor–Witt Motives
Milnor–Witt Motives
Milnor–Witt Correspondences
Construction of the Derived Category of Milnor–Witt Motives
Sheaves with Milnor–Witt Transfers on Zero-Dimensional Schemes
Artin Milnor–Witt Motives
Cohomological Milnor–Witt Mackey Functors
Span Categories
Milnor-Witt Mackey Functors
The Balmer Spectrum of Artin Milnor–Witt Motives
Algebraically Closed Fields and First Computations
The Base Field R and Coefficients in F2
Bibliography