| Orateur(s) | Peter RUSSELL - McGill University, Canada,
|
| Titre | Multiplicative actions on affine spaces. |
| Date | 13/06/2014 |
| Horaire | 11:00 à 12:00 |
|
| Diffusion | |
| Résume | I will review a few general facts about multiplicative actions and outline a proof that algebraic $C^*$-actions on $C^3$ are linearizable. A recent extension to arbitrary fields of characteristic zero is:
Forms of $G_m$-actions on $A^3$ are linearizable. As a corollary one finds that forms of $A^3$ that admit an action of an infinite reductive group are trivial. |
| Salle | 175 rue du Chevaleret - 75013 Paris |
| Adresse | |
