Workshop of the GRK 2240:
Welcome on the homepage for the Workshop of the GRK 2240. For more informations and activities of the former common AG DüsseldorfWuppertal: Algebra and Geometry see
webpage. Here can you find the program for the summer semester 2018. The talks given at HHU are in the seminar room 25.22.03.73 and the talks given
at BUW are in lecture hall HS7.
The topic for the winter semester 2018/19 is Stacks.
Here is the → detailed program
Program for winter semester 2018/19:
Date  Time  Speaker  Title 
Thursday, October 11 at HHU  16:3017:30  Stefan Schröer  Introduction to the GRK2240 
Thursday, October 18 at HHU  16:3017:30
18:0019:00 
N.N.
N.N. 
tba (no professors!)
tba (no professors!) 
Thursday, October 25 at HHU  16:3017:30
18:0019:00 
Stefan Schröer
Zeynep Kisakürek 
Fine and coarse moduli spaces
Grothendieck topologies 
Thursday, November 8 at HHU  16:3017:30
18:0019:00 
Andreas Krug (PhilippsUniversität Marburg)
N.N. 
McKay correspondence
Meeting of the PhD students and postdocs (no professors!) 
Thursday, November 15 at HHU  16:3017:30
18:0019:00 
Thomas Hudson
Fabian Korthauer 
Examples of Grothendieck topologies
Fibered categories 
Thursday, November 22 at HHU  16:3019:00

N.N.  Meeting of the PhD students and postdocs (no professors!) 
Thursday, November 29 at HHU  16:3017:30
18:0019:00 
Arthur Martirosian
Sean Tilson 
Sheaves on sites
Descent 
Thursday, December 6 at HHU  16:3017:30
18:0019:00 
Gerard van der Geer(Universiteit van Amsterdam)
N.N. 
Strata on the moduli of K3 surfaces
tba 
Thursday, December 13 at HHU  16:3017:30
18:0019:00 
Thuong Dang
Jens Hornbostel 
Examples of descent
Algebraic stacks 
Thursday, December 20 at HHU  16:3019:00

N.N.  Meeting of the PhD students and postdocs (no professors!)
Election for representative of the doctoral researchers 
Thursday, January 10 at HHU  16:3017:30
18:0019:00 
Georg Linden
Dennis Peters 
Examples of stacks and their properties
The moduli stack of elliptic curves 
Thursday, January 17 at HHU  16:3019:00

N.N.  Meeting of the PhD students and postdocs (no professors!) 
Thursday, January 24 at HHU  16:3017:30
18:0019:00 
Christoph Spenke
N.N. 
The Picard group of a moduli stack
Program discussion 