News

Welcome Isobel Davies

We are excited to welcome Isobel Davies to our team, who joined us in January 2021.
She will be working on his PhD under joint supervision of Petra Schwer and Linus Kramer (at WWU Münster).
Isobel, a warm welcome to you and we wish you a great start in your new phase!

mehr ...

Welcome Marco Lotz

We are excited to welcome Marco Lotz to our team, who joined us in November 2019.
He will be working on his PhD under joint supervision of Petra Schwer and Thomas Kahle.
Marco, a warm welcome to you and we wish you a great start in your new phase!

mehr ...

Vortrag von Dr. Annette Karrer

Im AG Seminar des Institutes für Algebra und Geometrie spricht

Frau Annette Karrer (Technion, Haifa)
über Contracting boundaries of right-angled Coxeter groups

Zoom-Koordinaten: https://ovgu.zoom.us/j/95199662620
Meeting ID: 951 9966 2620 / Passcode: 461614

Zeit: Dienstag, 1. Dezember 2020, 14.00 Uhr

Zu diesem Vortrag laden wir alle Interessierten herzlich ein.

 

Abstract:

A complete CAT(0) space has a topological space associated to it called the contracting or Morse boundary. This boundary captures how similar
the CAT(0) space is to a hyperbolic space. Charney{Sultan proved this boundary is a quasi-isometry invariant, i.e. it can be dened for CAT(0) groups. In my
PhD thesis, I studied contracting boundaries of amalgamated free products of CAT(0) groups and applied my insights to right-angled Coxeter groups. In the
talk, I will present the main results of my thesis with the focus on contracting boundaries of right-angled Coxeter groups.We will get to know right-angled Coxeter groups with totally disconnected contracting boundaries and will study interesting situations in which large connected components occur.

mehr ...

Visualizations of buildings

Bram Bekker is developing an interactive website that helps visualizing spherical and affine buidlings. 
This is really cool!

Go play with the impressive pictures on The Buildings gallery!

 

mehr ...

[1] | 2 | 3 | 4 vor

Letzte Änderung: 21.05.2021 - Ansprechpartner: P. Schwer