MacPherson 60th: Agenda

Geometry, Combinatorics and Algebraic Groups

A conference on the occasion of the sixtieth birthday of Robert MacPherson

October 7-9, 2004

 

Organizers:

Pierre Deligne - Institute for Advanced Study

Mark Goresky - Institute for Advanced Study

Robert Langlands - Institute for Advanced Study

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The Conference will be held in Wolfensohn Hall.

Messages for workshop guests may be left by calling (609) 734-8100 and will be placed on the bulletin board in the lobby of Wolfensohn Hall.

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THURSDAY, October 7

9:30-9:45 Peter Goddard (Director, IAS)- Opening Remarks

9:45 - 11:00 Bill Casselman (University of British Columbia), The work of Robert MacPherson

11:00-12:00 Alexander Goncharov (Brown University), Moduli spaces of local systems and higher Teichmuller theory

12:15-2:00 LUNCH (IAS Dining Hall)

2:00-3:00 William Fulton (University of Michigan), The Picard group of the moduli stack of elliptic curves

3:15-4:00 COFFEE/TEA BREAK (Fuld Hall Common Room)

4:00-5:00 Zoltán Szabó (Princeton University), Holomorphic disks and Heegaard diagrams

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FRIDAY, October 8

9:30-10:45 Anders Björner (KTH, Stockholm), Topological combinatorics

11:00-12:15 Lisa Jeffrey (University of Toronto), Cohomology rings of reduced spaces of spaces with group valued moment maps

12:15-2:00 LUNCH (IAS Dining Hall)

2:00-3:15 Daniel Biss (University of Chicago), From GrassM to MacP:� Oriented matroids in topology

3:15-4:00 TEA BREAK (Fuld Hall Common Room)

4:00-5:15 George Lusztig (MIT), Character sheaves on disconnected groups

6:30 - Dinner (Dilworth Room, Dining Hall)

*Reservations and payment required by September 29, 2004

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SATURDAY, October 9

9:00-10:00 Robert Kottwitz (University of Chicago), Toric varieties and the local trace formula

10:15-11:15 Tom Braden (University of Massachussetts, Amherst), Equivariant localization and intersection cohomology

11:30-12:30 Eduard Looijenga (University of Utrecht), Arrangements and ball quotients

12:30-2:00 LUNCH (IAS Dining Hall)

2:00-3:00 Kari Vilonen (Northwestern University), Geometry and representations of Lie groups