Homework for mandatory assignment. Hatcher: 3.1.8, 3.1.12, 3.1.13, 3.2.5, 3.2.12, 3.2.13, 3.2.14, 3.2.18, 3.3.5, 3.3.6, 3.3.14, 3.3.15, 3.3.24, 3.3.25, 3.3.26, 3.3.27, 3A4, 3B1, 3B2, 4.3.1, 4.3.5, 4L1-4L5. Milnor-Stasheff: 1-B, 3-B, 3-D, 3-E, 4-A, 4-B, 4-C, 4-D, 5-E, 6-B, 6-C.