Lecture 1: Coxeter Groups, Hecke Algebras and the Kazhdan-Lusztig basis

Slides for Lecture 1: Coxeter complexes and Kazhdan-Lusztig polynomials

Daniel's Lecture 2: Sheaves, functors, and constructible sheaves

Lecture 2: The derived category of constructible sheaves, perverse sheaves and the decomposition theorem

Lecture 3: Categorifying the Hecke algebra