Seminar on Quillen's proof of the Quillen-Suslin theorem

Abstract

Revised 1977 seminar handout on Quillen's proof of the 1976 Quillen-Suslin theorem -- that all finitely generated, projective $k[x_1,\ldots,x_n]$-modules are free. This particular write-up is based on arguments of Quillen, Paul Roberts, Vaserstein, and Moshe Roitman -- arguments that are here translated into the language of idempotent matrices, which seems rather natural.