You are here

Projections of Richardson Varieties

Travis Grigsby, Oklahoma State University
Wednesday, October 11, 2023 - 3:30pm to 5:00pm
PDL C-401 and via Zoom Link:
Travis Grigsby
Travis Grigsby


In algebraic geometry, Schubert varieties offer insights into Intersection Theory where their characteristic classes form a basis for the Grassmannian's cohomology ring. Richardson varieties are the pairwise intersection of Schubert varieties in general position. One of the most intriguing aspects of these varieties is how their geometric properties can often be described by the combinatorics of the Weyl Group and the Bruhat Order. In this talk, we give a combinatorial condition describing when the projection map from a Richardson variety to a partial flag variety has equidimensional fibers.

Note: This talk begins with a pre-seminar (aimed at graduate students) at 3:30–4:00. The main talk starts at 4:10.

Join Zoom Meeting:
Meeting ID: 915 4733 5974