Solutions to team exercises prepared by McKennah Edmunds and Andrew Winn, after consulting the web contributions by the Spring '19 class

1. 3.1.ii
2. 3.3
3. 3.3_Corollary
4. 3.5
5. 3.6
6. 3.7
7. 3.8
8. 3.9

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9. 4.2
10. 4.3 and 4.4
11. 4.5
12. 4.6
13. 4.7
14. 4.8
15. 4.9
16. 4.10