Has anyone heard of the plate trick ? Plate trick - Wikipedia, the free encyclopedia
I've already proofed the double-covering of by . I've also shown that 's fundamental group is . But I can't find anything between these results and the fact my arm can't make a 360° turn and go back to initial position without having my soup plate fall.
Can somebody help me modelize my arm, and explain to me the passage from theorical to practical?