Marius Leonhardt

picture of Marius

Ruprecht-Karls-Universität Heidelberg
Mathematisches Institut
Im Neuenheimer Feld 205
69120 Heidelberg

Email: mleonhardt (at) mathi (dot) uni-heidelberg (dot) de
Telephone: +49 6221 54 14216
Room number: 03.324

About me

I am a postdoc (wissenschaftlicher Mitarbeiter) at the University of Heidelberg in the group of Alexander Schmidt. My research areas are the arithmetic of abelian varieties, especially the theory of complex multiplication, Shimura varieties, and related topics.

Until 2019, I did my PhD under the supervision of Tony Scholl at the University of Cambridge. In my thesis I studied extra “plectic” Galois actions on Hilbert modular varieties.

Before that I completed my studies at the University of Heidelberg (MSc), the University of Cambridge (MAST) and the Karlsruhe Institute of Technology (BSc).

Publications and Preprints

  1. Plectic Galois action on CM points and connected components of Hilbert modular varieties, Jan 2020, arXiv, submitted.


Next term (SS 2021) I will give the lecture Arithmetic of Elliptic Curves. The announcement is here. If you are interested, please subscribe via MÜSLI.

This term (WS 2020/21) I am Obertutor for the lecture Algebra 1. Moreover, together with Christian Dahlhausen I am supervising the proseminar -adische Zahlen. 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.