# set terminal pngcairo  transparent enhanced font "arial,10" fontscale 1.0 size 500, 350 
# set output 'singulr.7.png'
set dummy u,v
set parametric
set isosamples 21, 21
set hidden3d back offset 1 trianglepattern 3 undefined 1 altdiagonal bentover
set title "Imaginary part of complex cube root function" 
set urange [ -3.00000 : 3.00000 ] noreverse nowriteback
set vrange [ -3.00000 : 3.00000 ] noreverse nowriteback
splot u**3-3*u*v**2,3*u**2*v-v**3,v