Invited participants:
Noam Elkies (Harvard), William Stein (Berkeley), Ed Schaefer (Santa Clara),
Everett Howe (San Diego), David Kohel (Sydney), Victor Flynn (Liverpool),
Paull Gunnells (New York), Michael Stoll (Düsseldorf).

Workshop "Drinfeld modules and rigid geometry" organized by Marius van der Put and Jaap Top.

Vasili Shabat - Artin-Schreier coverings with bounded ramification
Roland Auer - Witt vectors and abelian p-covers in characteristic p, part II
Nils Bruin - Rational points on curves of genus 3
Ronald van Luijk - Surfaces of general type and their rational points

The lectures take place in room 208 of the Minnaert building.

Roland Auer - Witt vectors and abelian p-covers in characteristic p, part I
Mike Zieve - Polynomials with Galois group S_n

The lectures take place in room 402 of the math department.

The inaugural lecture of Hendrik Lenstra takes place at 4.15 pm.
Place: Groot Auditorium, Academiegebouw, Rapenburg 73, Leiden.

Mike Zieve - Curves with many points
Christiaan van de Woestijne - The almost-power diameter of an integer

The talks take place in room 405 of the math department.

Speakers: Springer, Heath-Brown, Sarnak, de Bruijn.

Mike Zieve - Permutation polynomials and pointless curves
Karma Dajani - Equipartition of interval partitions and an applcation to number theory
Cor Kraaikamp - `The Mother of all Continued Fractions'

Jan-Hendrik Evertse - Points on subvarieties of tori
Rob Tijdeman - Algebraic aspects of discrete tomography

The talks take place in room P017 of the math department, Plantage Muidergracht 24.
As there are numerous UvA-alumni among the Dutch number theorists, intercity participants are welcome to visit the reception of the UvA math alumni reunion, which starts at 16h45 on the second floor of the math building.

This day has various talks of general interest by Mike Zieve, Hansjoerg Geiges, Hendrik Lenstra, Robbert Dijkgraaf and Robin Wilson.
It is part of the Stieltjes Onderwijsweek on Riemann surfaces.

Mike Zieve - Polynomials with prescribed monodromy
Frans Oort - On the existence of (non-)simple Jacobians
Hui Zhu - Existence of absolutely simple abelian varieties of a given dimension over an arbitrary field

Mike Zieve - Curves of every genus with many points
Hendrik Lenstra - Flags and lattice basis reduction

Sander Zwegers - Ramanujan's mock-theta functions
Don Zagier - More on mock-theta functions

Jaap Top - y²=x³+k over function fields
Masato Kuwata - Points defined over cyclic cubic extensions on an elliptic curve and generalized Kummer surfaces

Jasper Scholten will defend his PhD-thesis at 4pm in the Academiegebouw of the University.

Roland Auer - Curves over finite fields with many points
Maint Berkenbosch - Algebraic solutions of Riccati equations u' + u²= r(x)
Gert-Jan van der Heiden - 2-Selmer groups associated with y²=x(x²-p²)(x²-4p²)
Robert Carls - Counting points on elliptic curves over F_2ⁿ

Cryptography - Number Theory Colloquium. Time: 14.00 - 16.30. Place: room M279, CWI, Kruislaan 413, Amsterdam.
Program:
Stephan Overbeek (QC Technology BV) - Cryptography versus Factorisation - How Factorisation applies to Cryptography
Herman te Riele (CWI) - Optimal versus practical choice of parameters in Factorisation methods

The inaugural lecture of Hansjoerg Geiges takes place at 4.15 pm in the Groot Auditorium of the Academiegebouw of the Universiteit Leiden (Rapenburg 73).

Bart de Smit - On Chen's Jacobian relations
Andrea Bandini - Iwasawa theory and Greenberg's pseudo-null conjecture
Lajos Hajdu - On superelliptic equations

Gunther Cornelissen - The 2-primary class group of certain hyperelliptic curves
Jasper Scholten - Mordell-Weil groups of elliptic surfaces

Nils Bruin - Solutions of generalized Fermat equations
Ed Schaefer - The curve 1 + y³ = x⁴

Nils Bruin will defend his PhD-thesis on October 6 at 3.15pm in the Academiegebouw of the Universiteit Leiden (Rapenburg 73).

Frits Beukers - Algebraic solutions of differential equations
Marius van der Put - Algebraic solutions of third order equations
Alexa van der Waall - Algebraic solutions of Lamé equations

No webpages exist for the `early years' 1993-94, 94-95 and 95-96.

Maintained by Peter Stevenhagen (psh@math.leidenuniv.nl)
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