I think it was pendants on this forum, anyway.I don't think we have a pedants corner any more.

I think it was pendants on this forum, anyway.I don't think we have a pedants corner any more.
I don't think we have a pedants corner any more.
Just to be pedantic - they are not Klein Bottles. They are a projection into 3D space of a 4 dimensional shape. In the same way that a 2D shadow is not the same as the original item causing the shadow.
But I don't think we have a pedants corner any more.
Chris.
But I don't think we have a pedants corner any more.
Chris.
Had it become entangled in it?Q: What did the quantum engineer find in their Christmas stocking?
A: A dead cat!