Klein Poem:
A mathematician named Klein
Thought the Möbius Loop was divine
Said he, “If you glue
The edges of two
You get a weird bottle like mine.”
Check out this cool klein mug.
Also, this “klein” bottle opener:

Klein Poem:
A mathematician named Klein
Thought the Möbius Loop was divine
Said he, “If you glue
The edges of two
You get a weird bottle like mine.”
Check out this cool klein mug.
Also, this “klein” bottle opener: