Introduction to W-algebras and their representation theory
arXiv:1605.00138
Abstract
These are lecture notes from author's mini-course during Session 1: "Vertex algebras, W-algebras, and application" of INdAM Intensive research period "Perspectives in Lie Theory", at the Centro di Ricerca Matematica Ennio De Giorgi, Pisa, Italy. December 9, 2014 -- February 28, 2015.
fixed typos and minor errors