3 ms·

I thought a klein bottle is supposed to have walls with zero thickness -it's made of an idealized plane...

• kmill 10y ago
  Ok, it's an immersion in R^3 of a tubular neighborhood of an embedding of the Klein bottle in R^4. But be like Michelangelo and see the immersed Klein bottle inside the glass.
  • MichaelMoser123 10y ago
    ... but with an imaginary klein bottle you can own one without buying it; that's cheaper, isn't it?
    • unclenoriega 10y ago
      You'd think so, but it's actually more expensive because you don't get the experience of buying a Klein bottle from Cliff Stoll.