The course announcement.

Lecture notes by Mike Artin cover the course he delivered several years ago on which this course is (rather loosely) based. The notes by Pavel Etingof describe the material at the beginning of the course not covered by Artin's notes. Notes by Vladimir Hinich are for his guest lectures on Azumaya algebras and second etale (Amitsur) cohomology group.

The first homework is due Wednesday, February 22.
Homework 2 due Wednesday, March 7.
Homework 3 due Wednesday, March 21.
Homework 4 due Wednesday, April 11 (edited on April 2).