Helicoid

Monkey saddle

Mobius strip

Tractrix surface

Klein bottle

s = 6.981317007977318 rad (slider from 0 to 31.41592653589793, step 0.08726646259971647)
t = 0.5235987755982988 rad (slider from 0 to 6.283185307179586, step 0.08726646259971647)
a = Surface(((2 * sinh(v)) * cos(u)), ((2 * sinh(v)) * sin(u)), (2 * u), u, (-s), s, v, 0, t)
b = false
c = Surface(u, v, u^(3) - ((3 * v^(2)) * u), u, (-s), s, v, (-t), t)
d = false
f = true
g = Surface((sin(v) * cos(u)), (sin(v) * sin(u)), cos(v) + log(tan(v / 2)), u, 0, s, v, 0, t)
h = false
j = false
k = 2.1 (slider from 0 to 15, step 0.05)
i = Surface((sin((2 * u)) * (k + (cos(u) * sin(v / 2)) - (sin(u) * sin(v)))), (cos((2 * u)) * (k + (cos(u) * sin(v / 2)) - (sin(u) * sin(v)))), (sin(u) * sin(v / 2)) + (cos(u) * sin(v)), u, 0, s, v, 0, t)
e = Surface(((2 - (v * sin(u / 2))) * cos(u)), ((2 - (v * sin(u / 2))) * sin(u)), (v * cos(u / 2)), u, 0, s, v, (-t), t)