 Math 8212, Commutative and
Homological Algebra
 Lectures:
 TuTh 1:25 p.m.  3:20 p.m. in Vincent Hall 6
 Prerequisites:
 Math 8211
 Instructor:
 Christine Berkesch Zamaere
 Office: Vincent Hall 250
 Email: cberkesc at math.umn.edu (For faster response time, please include "Math8212" in the subject line.)
 Office hours:
 Tuesday 11:00 a.m.  12:00 p.m.,
 or by appointment (in Vincent Hall 250).
 Textbook:
 Commutative Algebra with a View Toward Algebraic Geometry by David Eisenbud, 1995. There is a copy on reserve in the Mathematics library in Vincent Hall.
 Description:
 This is the second semester of an introductory course in commutative and homological algebra. We will dicuss topics including dimension theory, Gröbner bases, free resolutions, and the CohenMacaulay property.
 Assessment:
 The course grade will be based on the homework and a presentation.
 Homework:
 You must collaborate on the homework. For the entire semester, you will work in a small group of 2 to 4 people. From this list of problems, your group should submit 20 problems, which will be collected together on the last day of class, March 26. In placing your name on an assignment with the others in your group, you are agreeing that each person listed has made a substantial contribution to and/or agrees with the solutions provided. The homework requirements are subject to changes and additions (but will not be made more difficult).
 Presentation:
 Each student will choose research paper on Commutative Algebra or Homological Algebra. A list of possibilities can be found here, but you may choose another paper with approval. If you have a certain topic in mind and cannot find something on the list of suggestions, I am happy to help you select a paper. At the end of the semester, you will give a presentation in class about the paper you have chosen. Email me by 5 p.m. on February 5 with the information on the paper you have chosen.
 Disabilities:
 Students with disabilities, who will be taking this course and may need disabilityrelated accommodations, are encouraged to make an appointment with me as soon as possible. Also, please contact U of M's Disability Services to register for support.

January 20 First Math 8212 meeting, Homework group email due by 5 p.m. February 5 Project paper choice due at 5 p.m. by email March 12, 24, 26 Inclass presentations March 26 Final 8212 meeting, Homework problems due
 Below is a list of topics and corresponding reading for the
semester, to help you prepare for class. Future lecture topics and
dates are subject to change.

Date Topic January 20 (10.0) Principal ideal theorem (10.1  only Cor. 10.7) Systems of parameters January 22 (10.2) Dimension of base and fiber (10.3) Regular local rings (11.1) DVRs January 27 (13.1) Noether normalization January 29 (13.3) Finiteness of integral closure (1.9) Quick review: Graded rings, Hilbert function, and Hilbert series (15.1, 15.2) Monomial orders February 3 (15.3) The division algorithm More on Gröbner bases February 5 (15.4) Buchberger's Algorithm (or "How to compute Gröbner bases") (15.10) Applications: Ideal membership February 10 (15.10) Applications: Elimination (15.10) Applications: Solving polynomial equations (15.10) Applications: Implicitization/ring map kernel (15.10) Applications: Radical membership M2 examples (15.8) Gröbner bases and flatness February 12 (15.10) Applications: Hilbert polynomial and computing the dimension of a ring February 17 Minimal free resolutions in local case Minimal free resolutions in graded case (17.1, 17.2) Koszul complexes February 19 (17.3) Building the Koszul complex from parts February 24 (19.1, 19.2) Projective and global dimension February 26 (19.3) The AuslanderBuchsbaum formula (18.1, 18.2) CohenMacaulay rings March 3 More foundations of the CohenMacaulay property March 5 (18.4) Flatness and depth Two proofs that the ideal of generic maximal minors is prime March 10 Summary March 12 Presentations: (1:251:50) Maggie, (1:552:20) Shelley, (2:252:50) Theo, (2:553:20) Steven March 24 Presentations: (1:251:50) Nicole, (1:552:20) Daniel, (2:252:50) Craig, (2:553:20) YaoRui March 26 Presentations: (1:251:50) Kim, (1:552:20) Christian, (2:252:50) Elise, (2:553:20) Yuxiang
Useful links for Macaulay2
 Macaulay2 webpage.
 Symbol index for Macaulay2.
 Downloading Macaulay2.
 The Macaulay2 Book.
 demo.m2.
Links