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RTG Lecture


RTG Lecture "Asymptotic Invariants and Limits of Groups and Spaces"

This semester’s RTG lecture will be split between courses by Wilderich Tuschmann on “Geometric Convergence and Finiteness Theorems and their Applications” and by Gye-Seon Lee on “Coxeter Groups and Geometry”.

Title: Geometric Convergence and Finiteness Theorems and their Applications (Wilderich Tuschmann)

Abstract: I will discuss finiteness and infiniteness results for Riemannian manifolds with curvature bounds and, more generally, for Alexandrov spaces, along with applications inside and outside Riemannian geometry. The underlying concepts and techniques involve, among others, tools form comparison geometry, Cheeger-Gromov convergence of Riemannian manifolds, Gromov-Hausdorff convergence of metric spaces, and Cheeger-Fukaya-Gromov collapsing theory, and I shall also include primers on these topics as well.
Prerequisites: Some solid knowledge of differential geometry and algebraic and differential topology.

Title: Coxeter Groups and Geometry (Gye-Seon Lee)

Abstract: Coxeter groups are finitely generated groups that resemble the groups generated by reflections. They play important roles in the various areas of mathematics. In particular there are many connections between Coxeter groups and geometry. This lecture focuses on how one can use Coxeter groups to construct interesting examples in geometry. It also provides a gentle introduction to the deformation theory of geometric structures along the way.

 

 

Past RTG Lectures


Winter Semester 2017/18
RTG Lecture "Asymptotic Invariants and Limits of Groups and Spaces"
The Willmore functional (Tobias Lamm), Thurston's theory of surfaces (Daniele Alessandrini)


Summer Semester 2017
RTG Lecture "Asymptotic Invariants and Limits of Groups and Spaces"
Introduction to parabolic geometries (Karin Melnick), Incidence structures on flag varieties and rigidity (Beatrice Pozzetti), CAT(0) groups and geometry (Petra Schwer)


Winter Semester 2016/17
RTG Lecture "Asymptotic Invariants and Limits of Groups and Spaces"
Torsion Invariants (Roman Sauer), Harmonic Maps (Andy Sanders)

 

 

 

Advanced Lectures


Schlüsselmomente der Geometrie (KA)

Differentialgeometrie (KA)

Geometrische Analysis (KA)

 

 

 

Research Seminars


Topology (KA)

Differential Geometry (KA)

Metric Geometry (KA)

Geometry (HD)

Geometric Analysis (KA)