Complex Numbers               C1
   
   0j1 * 0j1
_1
   
   1 0j1 _1 0j_1 * 0j_1
0j_1 1 0j1 _1 
   
   */~ 1 0j1 _1 0j_1 
   1  0j1   _1 0j_1
 0j1   _1 0j_1    1
  _1 0j_1    1  0j1
0j_1    1  0j1   _1
   
 
   4 | +/~ 0 1 2 3
0 1 2 3
1 2 3 0
2 3 0 1
3 0 1 2


