Surfaces55 of 113
Goursat surface (tanglecube)
Édouard Goursat, 1887
A quartic with the symmetry of the cube. Change the constant and the shape passes from six separate blobs to a hollow cube with round windows, the form called the tanglecube.
x⁴ − 5x² + y⁴ − 5y² + z⁴ − 5z² + c = 0
On mathcurve.com as Surface de Goursat