ODTÜ-BİLKENT ALGEBRAIC GEOMETRY SEMINAR

 

 

“Belyi’s Theorem - IV”

 

 

By

 

ALİ SİNAN SERTÖZ

(Bilkent University)

 

 

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

Time: 15.40

Place: Mathematics Seminar Room, SA – 141

 

 

 

 

 

Tea and cookies will be served before the seminar.