Mercurial, the Spectre wrote: The square manifold can be unwrapped back to 3D to get a square prism (or a cube).
Mercurial, the Spectre wrote: It's similar to the cylinder's 2-manifold that is topologically equivalent to the rectangle. To see, cut the cylinder in a direction perpendicular to the circles and unwrap it, the result is a rectangle or a square.
wendy wrote:What i would look for is to start with a red tetrahedron, and end in a blue one.
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