A Criterion for n-Fold Transitivity of Transformation Groups.
A Moebius-Like Formula in the Schubert Calcalus.
Affine braid group actions on derived categories of Springer resolutions
In this paper we construct and study an action of the affine braid group associated with a semi-simple algebraic group on derived categories of coherent sheaves on various varieties related to the Springer resolution of the nilpotent cone. In particular, we describe explicitly the action of the Artin braid group. This action is a “categorical version” of Kazhdan-Lusztig-Ginzburg’s construction of the affine Hecke algebra, and is used in particular by the first author and I. Mirković in the course...
Algebraic monoids with a dense group of units.
Analyse spectrale des fonctions modulaires