University of Regensburg from October 2011 to July 2012 and then at the Karlsruhe Institute of Technology from August 2012 to March 2015. My adviser was Prof. Dr. Roman Sauer. From April 2015 to September 2015, I was a teaching assistant at the University of Regensburg in the group of Prof. Dr. Clara Löh. From October 2015 to March 2016, I was employed at the Max Planck Institute for Mathematics Bonn where I was a postdoc in the group of Prof. Dr. Wolfgang Lück.
I want to thank all the aforementioned persons and institutions for their generous support in my time as a mathematician.
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