Click the thumbnails to enlarge.

A disconnected space (Figure 6.1.1)

Example 2 (Figure 6.1.2)

Example 3 (Figure 6.1.3)

Proposition 6 (Figures 6.1.4 and 6.1.5)

Examples 4 and 5 (Figures 6.1.6 and 6.1.7)