x←1j1                ⍝assignment
   y←5.25j1.5
   x+y                  ⍝addition
6.25J2.5
   x×y                  ⍝multiplication
3.75J6.75
    ⌹x                  ⍝inversion
0.5j_0.5
    -x                  ⍝negation
¯1J¯1