I am an Alexander von Humboldt Professor at the University of Göttingen. I am also a Senior Researcher (Directeur de recherche; DR2) (on leave) at the CNRS, attached to the Institut de Mathématiques de Jussieu (Paris VI/VII).

Most of my research centres on the study of the number, growth and distribution of discrete objects in algebraic structures. I am a number theorist by training, and my interests range throughout number theory, group theory, discrete mathematics and several other subjects.

Curriculum vitae

You can read my CV in English and French.