(a)
(b)
(c)
(d)
(e)
Figure 3: The region containing at time for the five trajectories in Figure 2. (a) The initial point is (0.5, 0.375, 0.3562), denoted by the black circle and located at . The green segments denote the regions containing . The region having is connected to the region having by the brown line. The other figures (b), (c), (d), and (e) are similarly obtained by using the different initial points in Figure 2.