## Topology and Related Seminars: Alejandro Adem, UBC

- Date: 11/02/2011
- Time: 15:00

Lecturer(s):
Professor Alejandro Adem, UBC

Location:

University of British Columbia

Topic:

Equivariant K-theory for Actions with Maximal Rank Isotropy

Description:

**Abstract:** Let G denote a compact connected Lie group with torsion-free fundamental group acting on a compact space X such that all the isotropy subgroups are connected and of maximal rank. Let T be a maximal torus with Weyl group W. We derive conditions on the induced action of W on the fixed-point set of T which imply that the equivariant K-theory of X is a free module over the representation ring of G. This can be applied to compute the equivariant K-theory of spaces of ordered commuting elements in certain compact Lie groups. This is joint work with J.M.Gomez.

Schedule:

3:00pm in WMAX 216

Sponsor: