This Escher-looking structure is the Klein Bottle. It exists only in four dimensions, has only one surface, and contains itself. See what happens when the Möbius Strip turns to drink. Many people have ...

Visually, the “Klein bottle” doesn’t seem all that impressive. On first glance it looks like a trendy Japandi-style vase. And yet it has fascinated mathematicians for more than 140 years. To ...

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Klein's vase is a solid made by twisting a three-dimensional tube, and it is said that it is somewhere behind as it follows the table. It is like a solid version of Moebius ring. There is a site ...