Math 681

Fall 2025

• Syllabus
• Notes by Ellingsrud and Ottem
• Chapter 1 Reading due Thursday 10/2.
• Chapter 1 Homework due Monday 10/6.
• Chapter 2 Reading due Tuesday 10/7.
• Chapter 2 Homework due Monday 10/13.
• Chapter 3 Reading due Thursday 10/16.
• Chapter 3 Homework due Friday 10/24.
• Chapter 4 Reading due Sunday 10/26.
• Chapter 4 Homework due Wednesday 11/5.
• Chapter 5 Reading due Thursday 11/6.
• Chapter 5 Homework due Friday 11/21.
• Chapter 6 Reading due Friday 11/21.
• Last Homework due Friday 12/5: blow up the D₄ surface singularity z² = x²y - xy².
  Find all the singularities of the result. Keep blowing up until you get something smooth.
  You can do more problems from Chapter 6 or 8 if you want.