• HW1: 1.14 abcde, 2.5, 2.7, 2.10, 2.15b, 2.16, 2.20, 2.21 (due Sept 19)
  
• HW2: 2.26, 2.28, 2.30, 2.35, 2.38 (due Sept 26)
  
• HW3: 3.5, 3.10, 3.20, 3.29, 3.30, 3.32 (due Oct 3)
  
• HW4: 3.40, 3.41, 3.43, 3.48, 3.52ab, 3.54 (due Oct 17)