Extremal contractions, stratified Mukai flops and Springer maps

Baohua Fu (1)

1 LMJL - Laboratoire de Mathématiques Jean Leray

We prove that two Springer maps over a nilpotent orbit closure with the same degree are connected by stratified Mukai flops and the latter is obtained by extremal contractions of a natural resolution of the nilpotent orbit closure.

Domaines: Géométrie algébrique [math.AG]

Baohua Fu. Extremal contractions, stratified Mukai flops and Springer maps. Advances in Mathematics, 2007, 213 (1), pp.165--182. ⟨hal-00069128⟩