Top-level heading

Actions of Cremona groups on CAT (0) cube complexes

Categoria: 
Seminari di Algebra e Geometria
Data e ora inizio evento: 
Data e ora fine evento: 
Aula: 
Sala di Consiglio
Sede: 

Dipartimento di Matematica, Sapienza Università di Roma

Speaker: 

Anne Lonjou (Université Paris-Saclay)

A key tool to study the plane Cremona group is its action on a hyperbolic space. Sadly, in higher rank such an action is not available. Recently, in geometric group theory, actions on CAT(0) cube complexes turned out to be a powerful tool to study a large class of groups.