Algebraic Topology Seminar

Organizer(s): 

For more information on this seminar, contact William Browder or Tony Bahri (Rider).

Please click on seminar title for complete abstract.

April 30, 2015
3:00pm - 4:00pm
TBA - Browder

Please note special time.

Location
Fine Hall 314
Speaker: William Browder,
Princeton University
April 30, 2015
4:30pm - 5:30pm
The total surgery obstruction

The 1960's Browder-Novikov-Sullivan-Wall high-dimensional surgery theory for deciding if an n-dimensional  Poincare duality space X is homotopy equivalent to an n-dimensional topological manifold has two obstructions.

Location
Fine Hall 314
Speaker: Andrew Ranicki,
University of Edinburgh
April 30, 2015
4:30pm - 5:30pm
The total surgery obstruction

Please note special time.   The 1960's Browder-Novikov-Sullivan-Wall high-dimensional surgery theory for deciding if an n-dimensional  Poincare duality space X is homotopy equivalent to an n-dimensional topological manifold has two obstructions.

Location
Fine Hall 314
Speaker: Andrew Ranicki,
University of Edinburgh
May 7, 2015
3:00pm - 4:00pm
Moduli space actions and cyclic operads

I will describe a combinatorial dg model for the homology of the open moduli spaces of punctured Riemann spheres.

Location
Fine Hall 314
Speaker: Ben Ward ,
Simons Center, Stony Brook