Geometry and Physics Seminar: Ed Richmond

  • Date: 01/27/2014
  • Time: 15:00
Lecturer(s):
Ed Richmond (UBC)
Location: 

University of British Columbia

Topic: 

The fibre bundle structure of smooth and rationally smooth Schubert varieties

Description: 

A theorem of Ryan and Wolper states that a type A Schubert variety is smooth if and only if it is an iterated fi bre bundle of Grassmannians. We extend this theorem to arbitrary finite type, showing that a Schubert variety in a generalized flag variety is rationally smooth if and only if it is an iterated fi bre bundle of rationally smooth Grassmannian Schubert varieties. The proof depends on deep combinatorial results in Coxeter groups. This is joint work with William Slofstra

Other Information: 

Location: ESB 4127

Please note change in Seminar start time: 3:00pm