Mathematical Institute Newsletter
March 2005
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Toren Academiegebouw

The Mathematical Institute Newsletter is maintained by Jan-Hendrik Evertse. In general, the newsletter is issued the first week of each month, except for July and August. This year, there will be no newsletter in June. 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 April 2005 newsletter, such as announcements, personal notes, visits to conferences, guests (with place of origin and date of arrival and departure), lectures of general interest, Ph.D. thesis defenses (with title of thesis), etc. should be sent by e-mail to evertse at before March 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

  • Inaugural lecture by Jan Hogendijk on Tuesday March 8 and seminar on March 8

    On March 8 Jan Hogendijk will give his inaugural lecture at Leiden University. Preceding his lecture there will be three other lectures on the theme "Mathematics across cultures" (Snellius, room 312).

    11:00-12:00:  Liesbeth de Wreede (Universiteit Utrecht): "Number is the measure of all": Snellius on the use of numbers in geometry
    12:00-  1:00:  Kim Plofker (Universiteit Utrecht and IIAS Leiden): Heron's formula and the geometry of quadrilaterals in Indian mathematics
      1:45-  2:45:  Karen Parshall (University of Virginia): The British Development of the Theory of Invariants (1841-1895)

    Jan Hogendijk's inaugural lecture will take place in the Academiegebouw, Rapenburg 73, Leiden.
      4:00-  5:00:  Jan Hogendijk's inaugural lecture: Geschenken uit het Oosten
      5:00:  Reception

    For more information on the program, take a look at:

  • Workshop Stochastic Systems from March 16-19 at Lorentz Center

    This workshop is coordinated by L. Kallenberg, G. Koole, U. Rieder and F. Spieksma. Further information.

  • General Colloquium lectures on Thursday March 17 in Leiden and March 24 in Delft

    This spring there is a cooperation between the general mathematics colloquia of Delft and Leiden. The following two lectures have been scheduled in March:

    March 17, 4:00-5:00, Leiden, Snellius room 174:
    Kees Oosterlee: Evaluation of European and American options with grid stretching and accurate discretization

    March 24, 4:00-5:00, Delft, EWI-gebouw, room E, Mekelweg 4:
    Sjoerd Verduyn Lunel: TBA

    Forthcoming lectures: Arnold Heemink (April 14, Leiden); Bas Edixhoven (April 21, Delft); Ben de Pagter (May 12, Leiden); Jan-Hendrik Evertse (May 19, Delft); Roger Cooke (June 2, Leiden); Marcel de Jeu (June 16, Delft).
    For further information see

  • Number theory lecture by Everett Howe (CCR, San Diego) on Tuesday March 21

    Title: Characterizing the zeta functions of genus 2 curves over finite fields.
    Time/place: 4:00, Snellius room 401.


  • Guest of Peter Stevenhagen:

    - Everett Howe (CCR, San Diego) from March 19-22. He will give a lecture on Tuesday March 21 (see above).

Visits/lectures outside our institute

- Bas Jansen: On March 11, he will give a lecture, titled "Escher en het Droste-effect" at the Nifterlake College in Maarssen
- Rob Tijdeman: From March 13-19 he will participate in a conference on substitutions in Grenoble, France.
- Peter Stevenhagen: On March 17 he will give a lecture for the "Natuurkundig Gezelschap te Leiden" titled "Crypto-krommen voor de doe-het-zelver."
- Sara van de Geer: From March 14-18 she will be at the Helsinki National Visitors Program, Merkrijarvi Research Station, Joensuu.

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