Seminar: CAT(0) Cube Complexes; SS 2023
Prof. Dr. Clara Löh
/
Kevin Li
/
Matthias Uschold
News

There are still free slots!
If you are interested in participating: please send an email
to one of the organisers.

The organisational meeting for this seminar was on
Thursday, February 9, at 12:00 (s.t.)
in M 101.
Registration: through the GRIPS registration form (before 13.02.2023, 10:00).

The schedule is now available.

This seminar will be held in English. The written report
can be in English or German. The handouts should be in English.
Seminar: CAT(0) Cube Complexes
In comparison geometry, geodesic triangles are compared with comparison triangles in a model
geometry. In particular, in CAT(0)geometry, geodesic triangles are "thinner" than in flat
Euclidean space. This provides a direct metric approach to geometry of nonpositive curvature.
Combining CAT(0)geometry with combinatorial structure (such as cube complexes or median graphs)
leads to a rich interaction between metric geometry, combinatorics, and geometric group theory.
In this seminar, we will learn the basic language of CAT(0)complexes and median graphs and then
study applications to topology, geometry, and group theory.
Several talks will also be suitable for students in the Lehramt Gymnasium track.
Time/Location
Wednesday, 8:3010:00, M 102
Material
Additional material:
Prerequisites
Basic group theory, basic theory of metric spaces
This seminar is suitable for Bachelor/Master students
with an interest in groups and geometry; several talks
will also be suitable for students in the Lehramt
Gymnasium track.
This seminar could be the
starting point for a project under my supervision (e.g., bachelor/master thesis,
Zulassungsarbeit).
Formalities/Credits
See the commented list of courses.
Last Change: February 16, 2023.