Lie Groups Seminar

Daoji HuangCornell University
Bruhat Atlases in Coordinates

Friday, October 18, 2019 - 3:30pm
Malott 406

A stratified smooth variety admits a Bruhat atlas if it can be covered by
open charts isomorphic to opposite Bruhat cells in some Kac-Moody flag
manifold via stratified isomorphisms. In this talk, I will present two cases
where the Kac-Moody is finite or affine type, which allows explicit
computation in coordinates using Bott-Samelson maps and other familiar
techniques in studying geometry of flag varieties.