The Bass--Quillen phenomenon for reductive group torsors
par
Kęstutis Česnavičius(Université Paris-Saclay)
→
Europe/Paris
Salle M7.411 (UMPA, ENS Lyon)
Salle M7.411
UMPA, ENS Lyon
Description
For a regular ring R, the Bass--Quillen conjecture predicts that every vector bundle on the relative affine space 𝔸^d_R descends to R.
I will discuss the generalization of this conjecture to torsors under more general reductive groups.