There are several Bell inequalities involving 4 values (e.g. CHSH where they are sometimes denoted by Q, R, S, T). The original Bell inequality involved 6. All being refuted by QM. Is it known whether there is one with only 3 values? I can prove there isn't one with 2 values.(adsbygoogle = window.adsbygoogle || []).push({});

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# Is there a Bell type inequality involving only three values?

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