Kęstutis Česnavičius - Presentation Lemmas in Mixed Characteristic
Автор: Institut des Hautes Etudes Scientifiques (IHES)
Загружено: 2023-07-21
Просмотров: 1777
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In his proof of the equal characteristic case of the Gersten conjecture for algebraic K-theory, Quillen used a geometric presentation lemma that may be viewed as a refinement of the Noether normalization theorem. Gabber, Gros--Suwa, and others have subsequently generalized Quillen's presentation lemma to establish Gersten-type phenomena for other cohomological functors. I will discuss presentation lemmas in mixed characteristics and present some of their consequences for the study of torsors under reductive groups.
Kęstutis Česnavičius (CNRS & Université Paris-Saclay)
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