Marius Leonhardt

picture of Marius

If you want to contact me, my email address is mleonhardt (at) mathi (dot) uni-heidelberg (dot) de .


I am interested in the arithmetic of abelian varieties, especially the theory of complex multiplication, Shimura varieties, and related topics. I also have some interest in cryptography and knot theory.

Since April 2020, I am a “wissenschaftlicher Mitarbeiter” at the University of Heidelberg. Before that I was a PhD student of Tony Scholl at the University of Cambridge.


  1. Plectic Galois action on CM points and connected components of Hilbert modular varieties, Jan 2020, arXiv, submitted. This article contains the results of my PhD research and is a shortened version of my PhD thesis.


This term (WS 2020/21) I will be Obertutor for the lecture Algebra 1. For details and past teaching, click here.

Reading Groups

During my PhD I participated in several reading groups about number-theoretic topics. Details can be found here.


Here you can find a list of talks I have given at research seminars and conferences:


Here is a list of conferences and workshops I attended/plan to attend.

I am also frequently participating in the ‘Kleine AG’. Topics include for example:

Other stuff I have written

(contact me for the pdfs)

Thanks to Sam Power for his help and advice on creating this webpage.