Masterclass and workshop on

Homotopical approaches to group actions

Aug 15-19 and Aug 22-26, 2011.

Aim: The main focus of this workshop will be understanding homotopical approaches to the study of group actions. It is a continuation of the workshop "Homotopy theory and group actions" held at the University of Copenhagen in August 2007.

Venue and dates: Centre for Symmetry and Deformation, KU . The activity consists of a Masterclass/phd-course Aug 15-19, 2011 and a workshop Aug 22-26.

Masterclass/PhD-course (Aug 15-19):

3 2x45min lectures by Adem, Hambleton, and Grodal, supplemented by informal discussions and exercise sessions. ALL TALKS IN AUD 8. Discussions & exercise sessions in 04.4.01. Cake, coffee etc in 4th floor common room. Lunch in the biocenter (coupons provided). 

	Mon Aug 15	Tue	Wed	Thu	Fri
09:15-11	Adem I	Grodal I	Adem II	Adem III	Grodal III
11:00-12	discussions	discussions	discussions	discussions	discussions
12:00-13	Lunch	Lunch	SYM lecture	Lunch	Lunch
13:00-14	exercises	exercises	exercises	exercises	exercises
14:15-16	Hambleton I	Hambleton II	Grodal II	Hambleton III	Roundup Jam
16:00-16:30	cake+coffee	cake+coffee	cake+coffee	cake+coffee	cake+coffee

 

Notes:

• Scanned notes (handwritten and unedited) taken at lectures linked above.
• Preliminary lecture notes of Grodal lectures
  
• Lecture notes on group cohomology related to Adem lectures
• Lecture notes related to Hambleton lectures (in particular Section 1-7+11).

Workshop (Aug 22-26):

2 lectures per day by various speakers, supplemented by informal discussions. ALL TALKS IN AUD 8.  COFFEE ETC IN 4TH FLOOR COMMON ROOM. LUNCH AT BIOCENTER.

	Mon Aug 22	Tue	Wed	Thu	Fri
10:00-11:00	coffee/fruit	coffee/fruit	coffee/fruit	coffee/fruit	coffee/fruit
11:00-11:45	E. Yalcin Productive elements in group cohomology and the rank conjecture	O. Unlu Constructing free group actions on products of spheres II	A. Viruel  Lifting group actions on graphs to actions in the homotopy category	I. Hambleton   Finite group actions on spheres with rank 1 isotropy	J. Grodal Finite group actions on sets, at a prime
12:00-13:00	Lunch	Lunch	Lunch	Lunch	Lunch
13:00-13:30	coffee/fruit	coffee/fruit	coffee/fruit	coffee/fruit	coffee/fruit
13:30-14:15	O. Unlu Constructing free group actions on products of spheres I	N. Petrosyan Cohomology of  crystallographic groups with cyclic holonomy of split type	A.Adem Equivariant K-theory for actions with maximal rank isotropy	A. Güçlükan  Obstructions for constructing equivariant fibrations +14:30-15:00  J. Smith:pro-homotopy theory, explained	P. Symonds Applications of group actions to Castelnuovo-Mumford regularity
15:00-15:30	cake	cake	cake	cake	PROBLEM SESSION w/ cake etc.

 

Organizers: Jesper Grodal (Copenhagen), Alejandro Adem (UBC), Ian Hambleton (McMaster)

Participants: Participant list here. 

Misc links and other documents:

• Lecture notes on group cohomology by Adem
• Link to 2007 workshop.
• Notes from problem session at 2005 NSF FRG meeting in Banff
• Notes from 2007 problem session

• Register here: REGISTRATION IS NOW CLOSED

  (Everyone, in particular locals, are asked to register --- this will give us an idea of how many people to expect at the lectures, and how many refreshments to order. For more detailed inquiries, please contact the organizers directly.)

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