Évènement

Thiago Landim
Sorbonne Université
https://li0nz.github.io/

Date(s) : 28/04/2026   iCal
14h00 - 15h00

Let G be a complex reductive group. In 1976, Springer described an embedding of the category of complex representations of the Weyl group of G into the category of G-equivariant perverse sheaves on the nilpotent cone of G. Recently, there were generalizations of such an embedding in two directions. First, Rider obtained a derived embedding, replacing the Weyl group by a degeneration of Lusztig’s graded Hecke algebra. Second, Achar, Henderson, Juteau and Riche obtained the abelian embedding for representations over an arbitrary regular commutative ring. In this talk, we will explain how to find a common generalization of both results, using the theory of reduced motivic sheaves.

Emplacement
I2M Luminy - TPR2, Salle de Séminaire 304-306 (3ème étage)

Catégories

• Séminaire