Actions of Cremona groups on CAT(0) cube complexes
Christian Urech (École polytechnique fédérale de Lausanne)
Abstract: Recently, in geometric group theory, isometric actions of groups on CAT(0) cube complexes have turned out to be powerful tools to study a broad range of groups. In this talk, I will explain the construction of CAT(0) cube complexes on which groups of birational transformations act by isometries and explain how to use these actions to deduce new and old group theoretical and dynamical results about Cremona groups. This is joint work with Anne Lonjou.
algebraic geometry
Audience: researchers in the topic
ZAG (Zoom Algebraic Geometry) seminar
Series comments: Description: ZAG seminar
The seminar takes place on Tuesdays and Thursdays via Zoom. Zoom passwords are given via mailing list on Fridays. To join the mailing list go to the website.
If you use a calendar system, you can see the individual seminars at bit.ly/zag-seminar-calendar
Times vary to accommodate speakers time zones but times will be announced in GMT time.
| Organizers: | Jesus Martinez Garcia*, Ivan Cheltsov*, Jungkai Chen, Jérémy Blanc, Ernesto Lupercio, Yuji Odaka, Zsolt Patakfalvi, Julius Ross, Cristiano Spotti, Chenyang Xu |
| *contact for this listing |