# Events current week

### Colloquium

No colloquium this week

###
Monday February 22, 2021 - Sunday February 28, 2021

Results
(3)

#### Monday February 22, 2021

02:00 PM - 03:00 PM

- 3-manifolds that bound no definite 4-manifold
- Marco Golla (Nantes)
- Online
- MPI Topology Seminar

#### Tuesday February 23, 2021

02:00 PM - 03:30 PM

- Non-abelian Abel's theorems and quaternionic rotation
- Vasily Golyshev (MCCME, Moscow/MPIM, Bonn)
- Online
- Seminar on Algebra, Geometry and Physics/joint with HU Berlin

#### Wednesday February 24, 2021

02:30 PM - 03:30 PM

- Modular vector fields and Calabi-Yau modular forms
- Nikdelan Younes (MPIM, Bonn)
- Online
- Number theory lunch seminar