[edko]

I know very little physics and mathematics, so apologies in advance if I am asking something very stupid, but is this a theorem in the mathematical sense of the word?

[miguelmurca]

Yes, in that it establishes an incompatibility: https://en.wikipedia.org/wiki/Bell's_theorem

[szeptik]

I am also confused by the idea of a theorem that can be refuted. As far as I know, if something can be refuted by experimental evidence then it cannot be a theorem.