I am a postdoctoral student at the Max Planck Institute for Mathematics in Bonn. You can find me at the MPIM until August 2021, after which I will move to Ann Arbor, Michigan. I completed my PhD in Leiden under the supervision of Jan-Hendrik Evertse and Peter Stevenhagen. The PhD thesis is freely available here. I am interested in number theory and surrounding areas, in particular the distribution of class groups, the circle method and Diophantine equations.
koymans (at) mpim-bonn dot mpg dot de
Max Planck Institute for Mathematics
Vivatsgasse 7, Office 221