Marius Leonhardt

picture of Marius

If you want to contact me, my email address is


I am a 3rd year PhD student of Tony Scholl, working on Galois actions on abelian varieties with complex multiplication. To be more precise, my research project involves the so-called plectic Galois group, a certain finite index extension of the absolute Galois group of , and its action on CM abelian varieties.

Reading Groups

This term, we are running a study group on the Drinfeld upper half plane. We meet on Thursdays, starting alternatingly at 3pm and 4pm, usually in MR13.

For more details and/or past reading groups, see here.


This term (Michaelmas 2017) I will be giving examples classes for the part III Lie algebras course. Webpage:

Past teaching includes supervisions in linear algebra, number fields, and number theory. Details can be found here.


Talk on perfectoid fields

Here you can find a list of talks I have given (apart from the talks held at the reading groups above):


Here is a list of conferences and workshops I attended.

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

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