Torsors under tori and Néron models
Torsors under tori and Néron models
Let R be a Henselian discrete valuation ring with field of fractions K. If X is a smooth variety over K and G a torus over K, then we consider X-torsors under G. If 𝒳/R is a model of X then, using a result of Brahm, we show that X-torsors …