[Settimanale] Fw: Avviso Seminario di Matematica, prof. Niels Borne (28.03.07)
SEMINARIO DI MATEMATICA mercoledì 28 marzo 2007 ore 16.00 Scuola Normale Superiore Pisa (Aula Russo) Niels Borne Université de Lille Terrà un seminario dal titolo: "An algebraic approach of fundamental groups of pointed curves" Abstract Let X be a smooth projective algebraic curve over an algebraically closed field of characteristic zero, and D a finite set of points. Then the étale fundamental group of X-D (that by definition classifies finite covers of X unramified outside of D) is well known by analytic methods : this is the (profinite) topological fundamental group of a Riemann surface of same genus. A famous problem is to find an algebraic proof of this fact. I will start with the central example where X is the projective line minus 3 points, and show that we can describe algebraically the solvable covers in this case. Then I will describe a more general attempt, based on parabolic sheaves. Tutti gli interessati sono invitati a partecipare. _______________________________________________ Settimanale mailing list Settimanale@mail.dm.unipi.it https://mail.dm.unipi.it/mailman/listinfo/settimanale
participants (1)
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Giulia Curciarello