Serre's Problem on Projective Modules

“Serre’s Conjecture”, for the most part of the second half of the 20th century, - ferred to the famous statement made by J. This statement was motivated by the fact that 1 n the af?ne scheme de?ned by k[x ,. ,x] corre- 1 n spond to ?nitely generated projective modules over k[x ,.