Combinatorics Seminar

Solvable lattice models are ice-like grids which originated in statistical mechanics. They are associated with solutions of the Yang-Baxter equation from quantum group modules, and are often used as a source of combinatorial formulas for special functions.

We will describe several classes of lattice models related to the cohomology and K-theory of the flag variety. The most general of these, joint with Ben Brubaker, Daniel Bump, and Hunter Spink, is a lattice model for motivic Chern classes of Schubert cells.