Uwe Jannsen

Born in Meddewade, Jannsen studied mathematics and physics at the University of Hamburg with Diplom in mathematics in 1978 and with Promotion (PhD) in 1980 under Helmut Brückner and Jürgen Neukirch with thesis Über Galoisgruppen lokaler Körper (On Galois groups of local fields).

From 1980 to 1989 he was an assistant and then docent at the University of Regensburg, where he received in 1988 his habilitation.

From 1989 to 1991 he held a research professorship at the Max-Planck-Institut für Mathematik in Bonn.

Jannsen's research deals with, among other topics, the Galois theory of algebraic number fields, the theory of motives in algebraic geometry, the Hasse principle (local–global principle), and resolution of singularities.

In the 1980s with Kay Wingberg he completely described the absolute Galois group of p-adic number fields, i.e. in the local case.