C∗-actions and birational geometry

par Gianluca Occhetta (Trento)

jeudi 19 janv. 2023, 10:30 → 11:30 Europe/Paris

salle 207 bâtiment 1R2 (Institut de Mathématiques de Toulouse)

In this talk I will show how some special actions of ${\mathbb{C}}^{\ast }$ on smooth projective varieties are related to birational transformations between the sink and the source of the action, discussing examples and related problems.

 

This is a joint work with Jaroslaw Wisniewski, Luis E. Solá Conde and Eleonora A. Romano.