page_title: Klein bottle
section_title: Bottle shape
hierarchical_section_title: Klein bottle / Parametrization / Bottle shape
caption_attribution_description: English: Klein Bottle with slight transparency, rendered with Mathematica 8 using the parameterisation provided by Robert Israel.
context_page_description: In topology, a branch of mathematics, the Klein bottle is an example of a non-orientable surface; it is a two-dimensional manifold against which a system for determining a normal vector cannot be consistently defined. Informally, it is a one-sided surface which, if traveled upon, could be followed back to the point of origin while flipping the traveler upside down. Other related non-orientable objects include the Möbius strip and the real projective plane. Whereas a Möbius strip is a surface with boundary, a Klein bottle has no boundary. For comparison, a sphere is an orientable surface with no boundary.
  The Klein bottle was first described in 1882 by the German mathematician Felix Klein. It may have been originally named the Kleinsche Fläche and then misinterpreted as Kleinsche Flasche, which ultimately may have led to the adoption of this term in the German language as well.
context_section_description: The parametrization of the 3-dimensional immersion of the bottle itself is much more complicated. 
  for 0 ≤ u < π and 0 ≤ v < 2π.
caption: Klein Bottle with slight transparency
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