Warp wrote:
> B. Gimeno wrote:
>> ....also known as Klein's Surface, this is a test of the almost
>> finished new version of the bastard tiling shapes from hell include
>> file.
> 
>   Personally I have always had a problem accepting klein's bottle as a
> true *borderless* surface because the surface intersects with itself,
> and the intersection could be interpreted as a border.

It only intersects itself in 3D because it can not be embedded in 3D.
But it can be embedded in 4 dimensions where it shows up as a true
borderless surface.

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