University of Cambridge > Talks.cam > Geometric Group Theory (GGT) Seminar > Projections, walls and stable cylinders

  Browse A-Z

Log in

University Account External (via Google)

🔐 Log In

Information on

Subscribing to talksdetails Finding a talkdetails Adding a talkdetails Disseminating talksdetails Help and Documentationdetails

ℹī¸ Information

Projections, walls and stable cylinders

Download to your calendar using vCal

  • UserDavide Spriano, Oxford
  • ClockFriday 06 June 2025, 13:45-14:45
  • HouseMR20.

If you have a question about this talk, please contact Francesco Fournier-Facio .

In this talk we will discuss a generalisation of Sageev’s wallspace construction that allows to improve geometrical properties of a space by looking at its dual with respect to a set of walls. Specifically , we’ll look at the interactions with hyperbolicity and focus on two applications. In CAT spaces, these techniques allow to construct a “universal hyperbolic quotient”, called the curtain model, that is analogous to the curve graph of a surface. When focusing on a space that is already hyperbolic, we the construction can be used to improve its fine properties, and in particular we address a conjecture of Rips and Sela and show that residually finite hyperbolic groups admit globally stable cylinders. This is joint work with Petyt and Zalloum.

This talk is part of the Geometric Group Theory (GGT) Seminar series.

This talk is included in these lists:

Note that ex-directory lists are not shown.

Other lists

Winstanley LT, Trinity College Alice Fisher Lecture Theatre, S Block Keith Day Road CB2 0QQ Cambridge American History Events

Other talks

Tea and Coffee Break Peri-Operative Medicine, and Obstetrics and Gynaecology TBC An Amphibious Urbanism | | Cut 4: The Desert Arrives Slowly Coming soon TBC
 

Š 2006-2025 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity