(thing) by Orange Julius Sun May 21 2000 at 19:25:50
A quartic surface that looks a lot like a tooth. It's a special case of a Goursat's Surface, in which a = 0, b = -1, and c = 0. The equation for a Tooth Surface is as follows:

x4 + y4 + z4 - (x2 + y2 + z2) = 0

I like it!

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