Colloquium
of the CRC 1442 Geometry: Deformations and Rigidity
Thursday, 26 January 2023
at 16:15
in lecture hall M2
Simplicity of automorphism groups of homogeneous structures
Speaker: Katrin Tent
We discuss some general criteria that can be used to show that the automorphism group of a homogeneous structure (such as metric space, right-angled building, graph or hypergraphs) are simple groups or have simple quotients.
Compact connected one-dimensional spaces
Speaker: Aleksandra Kwiatkowska
Using a dualization of the Fraisse limit construction from model theory, we show how to construct various (well known as well as new ones) projectively homogeneous compact connected one-dimensional metric spaces. Furthermore, instead of automorphism groups of homogeneous structures, we are interested in homeomorphism groups of projectively homogeneous spaces. I will present recent results on this topic.