Geplante Vorträge

Vergangene Vorträge

Moduli spaces and graph complexes in algebra, geometry and physics, SRS Les Diablerets, June 2026

Seminar of the working group Algebra, Fernuniversität in Hagen, November 2025
36. NRW Topology Meeting, Bonn, November 2025
Polylogarithms, homology of linear groups, and Steinberg modules, SRS Les Diablerets, June 2025
Tea Seminar of the group Geometry, Topology and Group Theory, University of Münster, January 2025
Research Seminar Algebra, Number Theory and Discrete Mathematics, Leibniz University Hannover, January 2025

Seminar on algebra, geometry and arithmetics, Adam Mickiewicz University Poznań, December 2024
Oberseminar Differentialgeometrie, University of Münster, November 2024
Moduli spaces of curves, moduli spaces of graphs and graph complexes, ETH Zürich ITS, September 2024
Topology and Geometric Group Theory Seminar, Karlsruhe Institue of Technology, June 2024
Mittagsseminar zur Arithmetik, 2 talks with Robin J. Sroka, University of Münster, May/June 2024
Topology Seminar, University of Michigan, May 2024

Wilhelm Killing Kolloquium - Postdoc presentations, University of Münster, November 2023
Oberseminar Model theory and groups, University of Münster, November 2023
Conference Model theory and groups, University of Münster, September 2023
Seminar AG Discrete Mathematics and Combinatorics, University of Marburg, September 2023
Oberseminar Global Analysis and Geometry, University of Regensburg, July 2023
Master class: Homology of groups and functors, University of Lille, June 2023
Fudan Topology Seminar, Fudan University (online), March 2023
Geometric Group Theory Seminar, University of Oxford, January 2023
Geometric Group Theory Seminar, University of Cambridge, January 2023

Dioscuri Centre in TDA Seminar, Dioscuri Centre in Topological Data Analysis (online), October 2022
Geometry And Topology Seminar, McMaster University, October 2022
Purdue Topology Seminar, Purdue University, October 2022
Complex Analysis, Dynamics and Geometry Seminar, University of Michigan, October 2022
Geometry meets Combinatorics, Bielefeld University, September 2022
Building(s) in Aarhus, Aarhus Institute of Advanced Studies, September 2022
Summer Topology Conference, University of Vienna, July 2022
Workshop on Cohomology, Geometry and Explicit Number Theory, Université Grenoble Alpes, June 2022
Topological and Homological Methods in Group Theory, Bielefeld University, March 2022
Combinatorial Coworkspace, Kleinwalsertal, March 2022

IMUNAM Algebraic Topology Seminar, National Autonomous University of Mexico (online), November 2021
Geometry And Topology Seminar, McMaster University, October 2021
Cohomology of Arithmetic Groups: Duality, Stability, and Computations, BIRS, October 2021
Geometry graduate colloquium, ETH Zürich, September 2021
Masterclass: High dimensional cohomology of moduli spaces, University of Copenhagen, July 2021
Algebra Seminar, University of the Basque Country (online), March 2021
Purdue Topology Seminar, Purdue University (online), February 2021

Oberseminar Algebra und Zahlentheorie, Saarland University (online), December 2020
Zurich Graduate Colloquium, ETH and University of Zürich, November 2020
Geometry Seminar, ETH Zürich, October 2020
Seminar on Nonlinear Algebra, MPI MiS Leipzig, July 2020
Heriot-Watt algebra online seminar, Heriot-Watt University (online), April 2020
Algebra and Geometry Seminar, University of Bristol, March 2020
Junior Geometry Seminar (BRIJGES), University of Bristol, March 2020
Group theory days in Düsseldorf, University of Düsseldorf, January 2020

Max Dehn Seminar, University of Utah, October 2019
Mini Max Dehn Seminar, University of Utah, October 2019
Southampton-Bielefeld Geometric Group Theory Meeting, University of Southampton, September 2019
Algebra/Topology Seminar, University of Copenhagen, September, 2019
Oberseminar Modelltheorie, Geometrie und Gruppentheorie, University of Münster, June 2019
AG-Seminar Topologie, Karlsruhe Institute of Technology, June 2019
Oberseminar Algebra und Geometrie, OVGU Magdeburg, April 2019
SPP 2026 - Geometry at infinity conference, University of Münster, April 2019
"Reflections and harmonies: Coxeter groups in music theory" - SYMBol, Bielefeld University, February 2019
Bielefeld-Münster Seminar on Groups, Geometry and Topology, Bielefeld University, January 2019

Junior Topology and Group Theory Seminar, University of Oxford, October 2018
Junior Geometry and Topology Seminar (GATEWAY), University of Warwick, April 2018
BKMR Research Seminar on Geometric Group Theory, University of Münster, August 2017
Bielefeld-Münster Seminar on Groups, Geometry and Topology, Bielefeld University, July 2017
Oberseminar Gruppen und Geometrie, Bielefeld University, June 2016
Oberseminar Modelltheorie, Geometrie und Gruppentheorie, University of Münster, May 2016
Models and Groups 6, İstanbul Center for Mathematical Sciences, March 2016

(mindestens eine Woche)

Dec 2024: One week at Adam Mickiewicz University Poznań, visiting Piotr Mizerka
May 2024: Two weeks at Purdue University and University of Michigan, visiting Jeremy Miller and Jennifer Wilson
Oct 2022: One week at McMaster University, visiting Robin Sroka
Oct 2022: One week at Purdue University, visiting Jeremy Miller
Oct 2021: One week at McMaster University, visiting Robin Sroka
Jul 2021: Two weeks at the University of Copenhagen, visitor at the Centre for Geometry and Topology
Oct–Nov 2019: Six weeks at the University of Utah, visiting Mladen Bestvina
Sep 2019: One week at the University of Copenhagen, visiting Nathalie Wahl
Apr–May 2019: One week at OVGU Magdeburg, visiting Frank Röttger
Oct–Nov 2018: Eight weeks at the University of Oxford, visiting Richard Wade
Sep 2015 – Feb 2016: Université Claude Bernard, Lyon 1; during this stay I wrote my Master thesis