My name is

JOERG JAHNEL. I worked for many years at theMathematical Instituteof the GoettingenGeorg-August-University.Meanwhile, I am less often at Goettingen, as I moved to the University of

Siegen. In a semester in between, I substituted a professorship at the HamburgHelmut-Schmidt-University.For a certain time, my

researchtakes place within the limits ofMany of my research projects were joint work with

- Algebraic Geometry,
- the Theory of Numbers and
- Computer Science.
Andreas-Stephan Elsenhansfrom Würzburg.

I am engaged per h.c. in the education of gifted students. I am member of the

MO e.V.and theMO-Ni e.V.I was one of the organizers of theMathematical Olympiadin Lower Saxony. Two times, I was the Team Leader of the Göttingen Team at theIMCin Blagoevgrad/Bulgaria.As a school student, I took part excessively in the Mathematical Olympiad, myself. My scores at the

IMOmeanwhile found their way to the internet.

## Office Hours

The by far most efficient way to reach me is to send me an

## My current tasks

At Göttingen, there are non left. At last, I was an associate of theGausz Laboratoryfor Algorithmic Number Theory.

## My CV (not really in a conventional form)

I do not come from Goettingen, originally. That I have the opportunity to work here, is essentially the result ofProf. Stuhler's activity. In the time before (and in between) I worked at other nice places, namely at

- the Mathematical Institute (in those days still called Maths Department) at
Jena,- the Max-Planck-Institut für Mathematik at
Bonn,- the Mathematical Institute at
Cologneand at the- the Laboratoire de Mathématique de l'Université de Paris-Sud at
Orsay.During the time, I received my salary from several sources. First, from some German state that does not exist anymore, later from the lands of

Further, I had scholarships from theThere were some other places that I could visit for short periods, only. Some of them were

- the University of the Land of Brandenburg at
Potsdam,- the Mathematical Research Institute at
Oberwolfach,- the University at
Bonnwhere the famousArbeitstagungentake place,- the University at
Wuppertal,- the University at
Münster,- the Institute for Experimental Mathematics at
Essen,- the Humboldt University at
Berlin,- the Technical University
Berlin,- the Ain-Shams-University at
Kairo,- the University of California at
Santa Cruz,- the American University in Bulgaria at
Blagoevgrad,- the International Centre for Theoretical Physics at
Trieste,- the Isaac Newton Institute at
Cambridge,- the Institut des Hautes Études Scientifiques at
Bures-sur-Yvette,- the Eidgenoessische Technische Hochschule at
Zuerich,- the
BanffCentre,- the University of
Bayreuth,- the INRIA at
Nancy,- the Université de Lille I at
Villeneuve-d'Ascq,- the Lorentz Centre at
Leiden,- the University of California at
San Diego,- the Mathematical Sciences Research Institute at
Berkeley,- the University of
Sydney,- the National Center for Theoretical Sciences at
Hsinchu, Taiwan,- the
ICERMat Providence,- die University of
Paderborn, and- the University of
Utrecht.Very shortly, just for one talk, I was at

- the University of
Mannheim,- the University of
Regensburg, and- the University of New South Wales at
Sydney.While I sat at one of my various little desks, I wrote a number of

paperswhich can be seen here.

This is viewed best under Version 2.01 or higher. last time: 5 August 2022 responsible for this page: Joerg Jahnel

There is a version of this page in German.

To my papers.

To my ancesty.

Some links to the world of Internet.