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math.AG2026
Involutive Brauer groups and Poincaré rings
Viktor Burghardt, Noah Riggenbach, Lucy Yang
We use the formalism of Poincaré -categories, as developed by Calmès-Dotto-Harpaz-Hebestreit-Land-Moi-Nardin-Nikolaus-Steimle, to define and study moduli stacks of line…
math.AG2025
Artin--Mazur formal groups and Milne duality via unipotent spectra
Shubhodip Mondal, Tasos Moulinos, Lucy Yang
We introduce and develop the notion of "unipotent spectra." This is defined to be the stabilization of Toën's category of affine stacks, and is related to recent work of Mondal--R…