9 September:
Exercise 2.11.2
16 September:
Exercise 2.11.3
23 September:
Exercise 2.11.4
Exercise 2.11.5
Exercise 3.14.1
21 October:
Exercise 4.9.6
4 November:
Exercise 5.13.1
Addition to Exercise 5.13.1
Exercise 5.13.3
11 November:
Exercise 6.8.1
Exercise 4.9.1
Exercise 4.9.5
18 November:
Exercise 6.8.3
23 November:
Exercise 6.8.5
Exercise 5.13.5
2 December:
Exercise 8.6.1