Click the thumbnails to enlarge.

Lemma 1 (Figures 13.3.1, 13.3.2, 13.3.3, 13.3.4, 13.3.5 and 13.3.6)

Example 1 (Figures 13.3.7, 13.3.8, 13.3.9 and 13.3.10)

Example 2 (Figure 13.3.11)

Example 3 (Figure 13.3.12)

Example 3 (Figures 13.3.13, 13.3.14, 13.3.15 and 13.3.16)

Example 4 (Figure 13.3.17)

Knot diagrams (Figures 13.3.18, 13.3.19, 13.3.20 and 13.3.21)

Example 5 (Figure 13.3.22)

Exercise 6 (Figure 13.3.23)

Exercise 9 and Exercise 10 (Figures 13.3.24 and 13.3.25)

Exercise 11 (Figure 13.3.26)