| 2003 | October, 30 | Steven Galbraith (Royal Holloway University of London), Tate pairing on Jacobians and applications in Cryptography |
| November, 13 | Jordi Guàrdia (UPC), Models minimals de corbes hiperel.líptiques Abstract |
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| November, 20 | René Schoof (Università di Roma "Tor Vergata"), Abelian varieties over Q with bad semi-stable reduction in one prime only Abstract |
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| November, 21 | Philippe Cassou-Noguès (Université de Bordeaux), Invariants of quadratic forms Abstract |
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| December, 4 | Christophe Ritzenthaler (Institut für Experimentelle Mathematik, Essen), An algorithm for point-counting on genus 3 non-hyperelliptic curves Abstract |
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| December, 18 | T. A. Fisher (Cambridge University), Explicit 3-descent for elliptic curves Abstract | |
| 2004 | February, 19 | Christophe Cornut (Institut de Mathématiques de Jussieu, Paris), Mazur's conjecture over totally real fields Abstract |
| March, 4 | Pierre Parent (Université de Bordeaux), On X0*(pr)(Q), r >1 Abstract |
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| March, 18 | Aristides Kontogeorgis (University of the Aegean), Automorphisms of ordinary and of Drinfeld modular curves X(N) Abstract |
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| April, 1 | Jayanta Manoharmayum (University of Sheffield), Serre's conjecture mod pq? Abstract |
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| April, 15 | Francisco Díaz y Díaz (Université de Bordeaux), Construcción de tablas de cuerpos de números con ejemplos Abstract |
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| April, 22 | Boris Moroz (Max-Planck-Institut für Mathematik, Bonn), Primes, binary cubic polynomials, and Diophantine equations Abstract |
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| April, 29 | Michael Stoll (International University, Bremen), X2+Y3=Z7 Abstract |
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| May, 6 | Eknath Ghate (Tata Institute of Fundamental Research, Mumbai), On the local semi-simplicity of ordinary modular Galois representations Abstract |
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| May, 13 | Annegret Weng (Johannes Gutenberg Universität), Picard curves over finite fields of large characteristic Abstract |
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| May, 27 | Mirelle Fouquet (Univ. Paris VII), Finding isogenous elliptic ordinary curves with a given endomorphism ring Abstract |
Organizers: Josep Gonzàlez (josepg, at mat.upc.es) and Víctor Rotger (vrotger, at mat.upc.es)