University of Colorado at BoulderSeminar on
STACKS AND GROUPOIDS Spring
2010: Tuesdays 45 PM in MATH 350


This is a
working seminar meant to introduce algebraic and smooth stacks,
groupoids, and orbifolds. The seminar will be held in MATH 350.
The mathematics department is at the corner of Colorado Ave
and Folsom St. For a map of the campus, click here. For last semester's seminar, click here. 
January 19 
Sebastian CasalainaMartin 
Organizational
meeting
and
review
of
last
semester's
seminar 
January 26  NO
SEMINAR 
NO
SEMINAR 
February 2  Sebastian CasalainaMartin 
Categories
fibered
in
groupoids 
February 9  Bart Kastermans 
Sets
versus
classes:
why
you
care (Lecture
notes) (Video) 
February 16  Sebastian CasalainaMartin 
Categories
fibered
in
groupoids
continued 
February 23  NO
SEMINAR 
FACULTY
RETREAT 
March 2  Graeme Wilkin  Introduction to descent theory 
March 9  Graeme Wilkin 
Descent theory continued 
March 16  NO SEMINAR  NONCOMMUTATIVE GOEMETRY CONFERENCE 
March 23  NO
SEMINAR 
SPRING
BREAK 
March 30  Sebastian CasalainaMartin 
The isomorphism presheaf and the definition of a stack 
April 6  Sebastian CasalainaMartin 
Representable morphisms 
April 13  Markus Pflaum  Differentiable stacks 
April 20  Markus Pflaum  Differentiable stacks continued 
April 27 
Eitan Angel  Gerbes 
References:
Some further references:
