(b)
Figure 3. The stress tensor trajectories Tσ( s ) of the C1-C2 BCP , C2-C3 BCP , C3-C4 BCP and C4-C5 BCP [4]cumulene and S-1,5- dimethyl-[4]cumulene are presented in each of sub-figures(a) and (b) respectively. The end of each Tσ( s ) is denoted by a cube marker.