Homepage of Benjamin Brück

I am a PhD student at Universität Bielefeld and my advisor is Kai-Uwe Bux. I did my Bachelor and Master studies at WWU Münster and wrote my Master thesis during a one-semester stay at Université Claude Bernard Lyon 1 under the supervision of Katrin Tent, Rizos Sklinos and Tuna Altınel.

Contact information

If you want to know how to reach me, click here.
Here you can find the homepage of our working group.

Research interests

Geometric Group Theory; Model Theory; RAAGs and their automorphism groups, in particular free groups and their model theory; Higher generating subgroups; Poset Topology; Buildings

Publications and theses

Teaching

From 2013 to 2015, I gave tutorials in Münster for the lectures Analysis II, Introduction to Algebra, Quadratic Forms, Higher Algebra I and Stable Groups. In 2016 and 2017, I held tutorials for the lectures Analysis II, Algebra I and Riemannian Geometry in Bielefeld.
In the winter semester 2017/2018, I was leading the discussion session for the course Groups acting on trees.
Currently, I am giving a tutorial for the lecture Ordinary differential equations.

Recent talks

"Buildings and the free factor complex" Junior Geometry and Topology Seminar (GATEWAY) , Warwick, April 2018

Introductory talk for the block seminar Arithmetic groups and Rigidity , Bielefeld, March 2018

"Out(Fn) and Outer Space" - BKMR Research Seminar on Geometric Group Theory, Münster, August 2017

"Higher generating subgroups in Aut(Fn) and GLn(ℤ)" - Bielefeld-Münster Seminar on Groups, Geometry and Topology, July 2017

"Bases in non-standard models of the theory of free groups" - Oberseminar Gruppen und Geometrie, Bielefeld, June 2016

"Weight in non-standard models of the theory of free groups" - Oberseminar Modelltheorie, Geometrie und Gruppentheorie, Münster, May 2016

"Weight in non-standard models of the theory of free groups" - Models and Groups 6, Istanbul, March 2016

Miscellaneous

I was one of the organisers of the block seminar Arithmetic groups and Rigidity which took place in Bielefeld from 21st to 23rd of March 2018. A shortened pdf-version of the introduction I gave at this seminar can be found here.

I am a member of the DFG priority programm "Geometry at infinity": SPP 2026.