Andrea Lachmann

A photo of me speaking at the YTM 2022.

I am a PhD student in the topology group at the University of Wuppertal.

My advisors: Prof. Jens Hornbostel, Prof. Marcus Zibrowius

I am a member of the GRK 2240: Algebro-Geometric Methods in Algebra, Arithmetic and Topology located at the universities of Düsseldorf, Wuppertal and Bochum.

Office: G.16.06
Email: lachmann (at)
Phone: +49 0202 439-3478
Address: Fakultät 4, Mathematik und Informatik
Bergische Universität Wuppertal
Gaußstraße 20
42119 Wuppertal

Research interests

In the context of my PhD project I work with Chow-Witt groups aka Milnor-Witt cohomology. My goal is to compute these for motivic classifying spaces of certain finite groups.
In addition I am interested in higher categories and algebraic and hermitian K-theory.

Publications and Preprints

Bounding the K(p-1)-local exotic Picard group at p>3
joint with Irina Bobkova, Ang Li, Alicia Lima, Vesna Stojanoska, Adela Zhang (Women in Topology IV)
Preprint (2024), arXiV:2403.15572, submitted for publication to Topology and its Applications

The localisation theorem for the K-theory of stable ∞-categories
joint with Fabian Hebestreit and Wolfgang Steimle
Proceedings of the Royal Society of Edinburgh Section A: Mathematics (2022).