Note since \( ^3 z+1=0 \), that
\( ^3 z=-1 \)
\( ^4 z=1/z \)
\( ^5z=z^{1/z} \)
where \( z^{1/z} \) is related to the Shell Thron boundary. So
\( ^nz \)
would be related to an iterated Shell Thron boundary.
\( ^3 z=-1 \)
\( ^4 z=1/z \)
\( ^5z=z^{1/z} \)
where \( z^{1/z} \) is related to the Shell Thron boundary. So
\( ^nz \)
would be related to an iterated Shell Thron boundary.
Daniel

