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math.AT2026

The Galois theory of -spectra and the Burnside ring

Niko Naumann, Luca Pol, Maxime Ramzi

We prove that the Galois groupoid of the category of -spectra for a finite group is algebraic, i.e. equivalent to the étale fundamental groupoid of the Burnside ring of

math.AT2026

Global 2-rings and genuine refinements

David Gepner, Sil Linskens, Luca Pol

We introduce the notion of a naive global 2-ring: a functor from the opposite of the -category of global spaces to presentably symmetric monoidal stable -categories…

math.AT2026

Separable commutative algebras in equivariant homotopy theory

Niko Naumann, Luca Pol, Maxime Ramzi

Given a finite group and a commutative ring -spectrum , we study the separable commutative algebras in the category of compact -modules. We isolate three conditions on…

math.AT2025

Torsion models for tensor-triangulated categories

Scott Balchin, J. P. C. Greenlees, Luca Pol +1

Given a rigidly-compactly generated tensor-triangulated category whose Balmer spectrum is finite dimensional and Noetherian, we construct a torsion model for it, which is equivalen…

math.AT2024

Quillen stratification in equivariant homotopy theory

Tobias Barthel, Natalia Castellana, Drew Heard +2

We prove a version of Quillen's stratification theorem in equivariant homotopy theory for a finite group , generalizing the classical theorem in two directions. Firstly, we work…

math.AT2024

A symmetric monoidal fracture square

Niko Naumann, Luca Pol, Maxime Ramzi

Given a symmetric monoidal stable -category which is rigidly-compactly generated and a set of compact objects of , one can form the…