RESEARCH GROUP

GEOMETRY

I organized the last meeting of the 'Thompson community', namely the GoTh Workshop: Thompson groups and their relatives, jointly with Kai-Uwe Bux, Ilaria Castellano and José Pedro Quintanilha. The event took place in September 2023 here in Magdeburg, gathering over 50 participants among long-time experts, newcomers, and enthusiasts from all around the globe. Thanks for joining!

The Young Geometric Group Theory XI (2023) took place in Münster, organized by Giles Gardam, Kasia Jankiewicz, Bakul Sathaye, and myself. We hosted over 150 participants from 16 countries. Thanks for joining!!
Our grants (from the SPP 2026, the Excellence Cluster in Münster, the MathCoRe here in Magdeburg and the US american NSF) covered most of the costs.
At the YGGT XI I was also appointed as a Panelist for the "Equity, Diversity, and Inclusion" (EDI) Panel, together with Indira Chatterji, Alex Edletzberger and Genevieve Walsh.

Anna Michael, Felix Reinbott and I organized the Annual Colloquium 2022 of the MathCoRe, which took place in Thale. We also hosted there a special session about "Maths, Geopolitics, and Society", jointly with Barbara Witter.

The Buildings Conference Series, previously organized by Linus Kramer, moved to Magdeburg in 2019 after a long time -- it was then organized by Petra and myself. Its sequel, the Buildings 2021, also took place here in Magdeburg, organized by Anna Michael, Isobel Davies, Petra Schwer and myself.

At the OvGU I founded the WISST! - das "What is..."-Seminar beim Tee!, where we get to learn new stuff from Maths and Didactics in an informal environment.

In 2020 I shared a few words about my academic path so far and the importance and meaning of the PETMAT Program in Brasília. The (online) meeting was part of an event on the 25 Years of the PETMAT/UnB, organized by Prof. Luciana Ávila Rodrigues and the current students of the PETMAT. Prof. Ávila Rodrigues published a book (open access, downloadable here) about the history of this successful program, and my brief testimony was published in the book (p. 203; in Portuguese).

The IAG runs a joint Oberseminar, check out its homepage for announcements and program.
From the WiSe2017/2018 to the WiSe2018/19 I was also co-organizer of the Oberseminar Gruppen und Geometrie in Bielefeld.

In June 2018 I served as a reporter for the Oberwolfach Workshop on Cohomological and metric properties of groups of homeomorphisms of R.

Together with Benjamin Brück and Eduard Schesler I organized the Block Seminar on Arithmetic groups and rigidity, which took take place in Bielefeld in March 2018. The most recent Block Seminar, Constructions of aspherical manifolds and complexes, was organized by our colleagues from Regensburg and took place on the Frauenchiemsee in September 2018.

Recent talks:

Outside the OvGU, you might have recently heard about my work at...

• the Geometry Seminar of the University of Wrocław, Poland,
• the Sep 2022 meeting of the LMS research group Functor Categories for Groups in London, UK,
• the Buildings 2022 Conference (celebrating Hendrik Van Maldeghem) in Gent, Belgium,
• the GGT session of the 36th Summer Topology Conference in Vienna, Austria,
• the (online) joint Southampton--Kortrijk Groups & Geometry Meeting in Southampton, UK.

Upcoming work trips:

In the near future you might meet me at...

• the conference Nielsen Theory and Related Topics, in Oostende, Belgium,
• the University of Gent, Belgium, for the Summer School on Expanders,
• the University of Galway, Ireland, for the GiG2023,
• the Annual Colloquium of the MathCoRe in Wittenberg,
• the ETH Zürich, Switzerland, visiting Benjamin Brück, Brita Nucinkis and Mireille Soergel.