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 fibre 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 fibre 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: 3:00pmĀ