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Calypso - singular algebraic surface

by ofloveandhate

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algebraic geometry algebraic surface bertini bertini real blender math math art non-manifold non-smooth singular surface surface unbounded

Calypso, a singular algebraic surface of degree three. This is the set of real points for which
```
x^2 + y^2*z - z^2 = 0.
```

Has a single point singularity.

I have provided these files:
* `calypso_smooth_thickened.stl` -- has the normal vectors fixed, and is thickened for printing.
* `calypso_blocky_thickened.stl` -- the blocky version, good for printing
* `calypso_blocky_xy.stl` -- raw triangulation coming from Bertini_real. Since the program works in arbitrary dimensions, I

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