Talk:Twist (mathematics)

Twist, in general

There is a notion of twist, in general, in mathematics; it would be nice if this article defined it. The general definition is, roughly, if you have two of something, you can join them with a ribbon, using for example, the fully antisymmetric tensor $\varepsilon ^{AB}$ to do it, where $\varepsilon ^{12}=1=-\varepsilon ^{21}$. The classic example is a torus with a twist which gives you the Klein bottle. Could someone please write this up, properly? There's lots of "twisted" things in higher mathematics... 67.198.37.16 (talk) 20:52, 23 November 2020 (UTC)