Uwe Jannsen
Uwe Jannsen (born March 11, 1954 in Meddewade ) is a German mathematician who deals with algebra, algebraic number theory and algebraic geometry.
Life
Jannsen studied mathematics and physics at the University of Hamburg with a diploma in mathematics in 1978 and a doctorate with Helmut Brückner and Jürgen Neukirch in 1980 ( About Galois groups of local bodies , Inventiones Mathematicae, vol. 70, 1982, p. 73). In 1983/84 he was a post-doctoral student at Harvard University . From 1980 to 1989 he was an assistant and then a lecturer at the University of Regensburg , where he completed his habilitation in 1988. From 1989 to 1991 he was a research professor at the Max Planck Institute for Mathematics in Bonn . In 1991 he became a full professor at the University of Cologne and since 1999 he has been a professor at the University of Regensburg.
Jannsen dealt, among other things, with the Galois theory of algebraic number fields , and in algebraic geometry with the theory of motifs by Alexander Grothendieck and others, a cohomology theory for algebraic varieties, its expansion in mixed motifs (after Pierre Deligne ), motivic cohomology (after Vladimir Wojewodski ), Hasse principles ( local-global principle ) and the resolution of singularities . With Kay Wingberg , he completely described the absolute Galois group of p-adic number fields in the early 1980s, i.e. in the local case.
In 1994 he was invited speaker at the International Congress of Mathematicians (ICM) in Zurich (Mixed Motives, Motivic cohomology and Ext-groups).
He has been a full member of the Bavarian Academy of Sciences since 2009 and of the Academia Europaea since 2011 .
One of his students is Moritz Kerz .
Fonts
- Mixed Motives and algebraic K-theory, Lecturenotes in Mathematics Vol. 1400, Springer Verlag 1990 (with attachments by C. Schoen, Spencer Bloch ).
- with Steven Kleiman , Jean-Pierre Serre (Editor): Motives, Proc. Symposium Pure Mathematics Vol. 55, 2 volumes, American Mathematical Society 1994 (Conference University of Washington, Seattle, 1991)
- Motives, Numerical Equivalence and semi-simplicity, Inventiones Mathematicae, Vol. 107 1992, p. 447, online here
Web links
Individual evidence
- ^ Biography, pdf, University of Regensburg
- ↑ Jannsen, Wingberg: The structure of the absolute Galois group of p-adic number fields , Inventiones Mathematicae Vol. 70, 1982, pp. 71-98, online
- ^ Mathematics Genealogy Project
- ↑ Göttingen Digitization Center: Motives, Numerical Equivalence and semi-simplicity ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. , July 12, 1991
| personal data | |
|---|---|
| SURNAME | Jannsen, Uwe |
| BRIEF DESCRIPTION | German mathematician |
| DATE OF BIRTH | March 11, 1954 |
| PLACE OF BIRTH | Meddewade |