Mathematical Institute Newsletter
February 2003
 
 
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Toren Academiegebouw

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
http://www.math.leidenuniv.nl/~evertse/newsletter.shtml
(go to the homepage of the Mathematical Institute and click on "Newsletter").

Copy for the newsletter of March, such as announcements, personal notes, visits to conferences, guests, lectures of general interest, should be sent by e-mail to evertse@math.leidenuniv.nl before February 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

  • Stieltjes afternoon on Wednesday February 12
     
    On February 12, the Korteweg-de Vries Institute organizes a Stieltjes afternoon, with the presentation of the Stieltjes prize 2001, a lecture by the Stieltjes prize winner, a lecture by Prof. E. Opdam (UvA) and two lectures by the Stieltjes visiting professor and Fields medalist 1998 M. Kontsevich (IHES).
    Time/place: 1:30-6:00 pm, Gebouw Euclides, Plantage Muidergracht 24, Amsterdam, room P.227 (second floor).

  • 45th European study group Mathematics with Industry from February 17-21
     
    The 45th European study group Mathematics with Industry is held from February 17-21 at the Lorentz Center. The study group is coordinated by V. Rottschäfer, D. Pik and N. Ovenden (TU Eindhoven).

  • Ph.D. thesis defense of J. Roskam on Thursday (!) February 20
     
    Time/place: 2:15 pm, senaatskamer Academiegebouw, Rapenburg 73, Leiden
    Title of dissertation: Primitive roots and singular moduli
    Supervisor: Prof.dr. P. Stevenhagen

  • General Colloquium
     
    Thursday February 27, 4:00 pm, room 174
    Dr. J. van den Berg (CWI, Amsterdam): Percolation and related phenomena
     
    Thursday March 13, 4:00 pm, room 174
    Dr. H. Matzinger (Universität Bielefeld): Some Ideas in Scenery Reconstruction

Personal notes

  • New employees (permanent faculty):
     
    - Dr. F. Merkl (ud), per January 1, 2003, research group Probability Theory and Mathematical Statistics (Prof.dr. S.A. van de Geer)
    "I am working in the group of Sara van de Geer as ud since January 1, 2003. My present working field is probability theory, in particular random Schroedinger operators, statistical mechanics, point processes and combinatorial models associated to random matrices. I graduated in Munich (Germany) in mathematics and physics with a mathematical diploma thesis in logic and a physical diploma thesis in statistical mechanics. After that, I wrote my Ph.D. thesis in complex analysis (Riemann surfaces of infinite genus) at the ETH Zurich. As a postdoc, I did research at the Courant Institute (New York), at Eurandom (Eindhoven), and at Bielefeld university, where I also wrote my habilitation thesis."


Guests

  • Guests of Prof.dr. S.A. van de Geer:
     
    - Vladimir Konakov (Academy of Sciences, Moscow) will visit our institute from February 1 till the end of April. He will work with Prof. van de Geer on nonparametric models for dependent data and approximations by diffusions.
    - Bineeta Adityan (Mahatma Gandhi University, Kottayam) will visit our institute from February 1-June 1. Prof. Adityan will work with Prof. van de Geer on classification theory.

  • Guest of Prof.dr. R. Tijdeman:
     
    - J. Hancl (Ostrava, Czech Republic) will visit our institute from February 3-28.

  • Guest of Prof.dr. S.J. Edixhoven:
     
    - Ariane Mezard (Orsay, France) will visit our institute from February 1- July 31. She works in Arithmetic Algebraic Geometry.

  • Guest of Prof.dr. P. Stevenhagen:
     
    - Francesco Pappalardi (Univ. Roma III) will visit our institute from February 20-23. He will give a lecture and participate in the thesis defense of Hans Roskam.

Technical reports

MI 2002-30   P. Stevenhagen: The correction factor in Artin's primitive root conjecture
MI 2002-31   L.A. Peletier & J.A. Rodriguez: Fronts on a lattice
MI 2003-01   V.F. Molchanov: Canonical and boundary representations on a hyperboloid of one sheet

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