From March till May 2022 Sven van Nigtevecht and I are organising a reading seminar on orientations of structured ring spectra. The goal is to understand the constructions of the Spin and String orientations on real K-theory, and the String orientation on topological modular forms.
From December 2020 till March 2021, Jack Davies and I organised a reading group on synthetic spectra. There are some notes on the seminar website.
In Spring 2020, Gijs Heuts, Mingcong Zeng and I organised the master student seminar about exotic spheres.
From Fall 2019 to Spring 2020, Jack Davies, Magdalena Kedziorek, Tommy Lundemo, Mingcong Zeng, and I had a a reading seminar on chromatic homotopy theory. In the seminar, we studied nilpotency and periodicity theorem by Devinatz, Hopkins and Smith, some fundamental work of Ravenel, as well as basic notion of tensor triangulated geometry and its application on the classification of thick tensor ideals of the G-equivariant stable homotopy category. There are some notes on the seminar website.