Michael Figelius

Michael Figelius is a postdoctoral researcher at the University of Siegen's Department of Electrical Engineering and Computer Science, supervised by Markus Lohrey. His work bridges theoretical computer science and mathematics.

His research focuses on Algorithmic Group Theory, Number Theory, and their applications in IT-Security and Blockchain Technology. Key areas include automata theory, computational complexity, and cryptographic algorithm design.

Recent publications (2020–2022) highlight his contributions to group-theoretical problems, complexity analysis of word problems, and algorithmic properties of wreath products and HNN-extensions. These works intersect with theoretical computer science, algebraic structures, and cryptographic security.

He has taught courses such as Formal Languages and Automata, Computability and Logic, and Complexity Theory at the University of Siegen since 2016, including undergraduate mathematics instruction (2013–2017) in algebra, complex analysis, and statistics.