Belyis Theorem - IV
ALİ SİNAN SERTÖZ
Abstract: In the previous talks, the proof of Belyi's theorem was completed modulo a finiteness criterion. In this talk I will first remind certain concepts from last semester's talk and then I will prove that finiteness criterion. Namely, I will prove that a compact Riemann surface S is defined over the algebraic numbers Q¯ if and only if the orbit of S under the action of the Galois group Gal(C/Q) is finite. This will complete our coverage of chapter 3.
Date: Friday, February 27, 2015
Place: Mathematics Seminar Room, SA 141
Tea and cookies will be served before the seminar.