Welcome to the Spring 2018 page for the Boston University Number Theory Expository Seminar!

Topic: Dessins d'Enfants

Time: Friday 2.30pm - 4pm

Location: MCS B31

Some references:

• [Sc] Schneps, Dessins d'Enfants on the Riemann sphere
• [Gr] Grothendieck, Sketch of a Programme
• [Za] Zapponi, What is ... a Dessin d'Enfant?
• [GGD] Girondo, Gonzalez-Diez, Introduction to compact Riemann surfaces and dessins d'enfants
• [HS] Herrlich, Schmithüsen, Dessins d'enfants and Origami curves
• [JW] Jones, Wolfart, Dessins d'Enfants on Riemann Surfaces
• [Ro] Robalo, Galois Theory towards Dessins d'Enfants
• [Gu] Guillot, An elementary approach to Dessins d'Enfants and the Grothendieck-Teichmüller group

Week	Topic	Speaker	Notes
1 (01/26)	Introduction [Sc] (sorta)	Angus	Lecture 1
2 (02/02)	Riemann Surfaces I [GGD]	Ricky	Lecture 2
3 (02/09)	Riemann Surfaces II [GGD]	Sachi	Lecture 3	Sachi's Notes
4 (02/16)	RS's and Discrete Gps I [GGD]	Rod	Lecture 4	Rod's Notes
5 (02/23)	RS's and Discrete Gps II [GGD]	Jim	Lecture 5
6 (03/02)	No meeting (Winter School)
7 (03/09)	No meeting (Spring Break)
8 (03/16)	Belyi's Theorem [GGD]	Maria Ines	Lecture 6
9 (03/23)	Dessins d'Enfants [GGD]	Berke	Lecture 7
10 (03/30)	TBD (Them Bloody Dessins)	Alex	Lecture 8
11 (04/06)	Belyi's Thm, Effective Mordell, and ABC	Angus	Lecture 9
12 (04/13)	A proof of the ABC conjecture, and genuine number theory	Alex	Lecture 10
13 (04/20)	Three short stories about Belyi's Theorem	Ricky	Lecture 11
14 (04/27)	Dessins in Physics	Jim	Lecture 12