The Mathematical Institute Newsletter is maintained by
Jan-Hendrik Evertse. The newsletter will be issued
the first week of each month,
except for July and August.
The electronic version of the newsletter can be found on
(go to the homepage of the Mathematical Institute and click on "Newsletter").
Copy for the newsletter of February, such as
announcements, personal notes,
visits to conferences, guests, lectures of general interest,
should be sent by e-mail to
before January 27.
Copy should be submitted in English plaintext,
so that it can be inserted into the newsletter without
time consuming typing or translating work.
Agenda and announcements
Farewell reception for Chris Zaal on January 17
Chris Zaal has been working for our institute since 1999.
He was responsible for all activities concerning public relations
and the propagation
of mathematics. Further he was employed by the Wiskundig Genootschap
(Pythagoras, Nieuw Archief).
On January 1, 2003 he leaves our institute, to take a new position
at the Freudenthal Institute of the University of Utrecht.
On occasion of his departure, the Mathematical Institute
will offer him a reception.
Time: Friday January 17, 4:00 pm
Place: Room 176, Mathematical Institute, Niels Bohrweg 1, Leiden.
Thursday January 23, 4:00 pm, room 174
Prof.dr. S.J. Edixhoven (Universiteit Leiden):
Counting solutions of systems of equations over finite fields.
- dr. M.F.E. de Jeu (ud), per January 1, 2003, research group Analysis
(Prof.dr. S. Verduyn Lunel)
"I am working as assistant professor in the group of Sjoerd Verduyn Lunel
since January 1, 2003. Leiden is my home university: I studied here and
obtained my PhD under supervision of Gerrit van Dijk and Eric Opdam. My
research has a functional analytic angle and covers topics in
representation theory, special functions, approximation theory and
probability theory. Previously I have been affiliated with M.I.T., Paris
VII, the Ministry of Transport and Water Management and the University of
- dr. F. Merkl (ud), per January 1, 2003, research group Probability Theory
and Mathematical Statistics (Prof.dr. S.A. van de Geer)
- drs. C.G. Zaal, per January 1, 2003, to Freudenthal Institute in Utrecht.
Guest of Prof.dr. G. van Dijk:
- V.F. Molchanov (Tambov, Russia) will visit our institute
from December 2 - February 2.
Guest of Prof.dr. R. Tijdeman:
- Dr. T. Herendi (Debrecen, Hungary) will visit our institute
and the CWI (Amsterdam) from January 20-31.
- Working visits/visits to conferences:
- J.-H. Evertse will be in Debrecen (Hungary)
from January 6-17, 2003.
- R. Tijdeman will be in Debrecen
from January 6-13 and in Budapest from January 13-15.
- Technical reports:
||M. Bertsch, R. van der Hout and E. Vilucchi|
A Minimal Solution for a Singular Parabolic Problem
||Marta Fiocco and Willem R. van Zwet|
Environmental influences on the spatial distribution of plant species