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## Main Question or Discussion Point

Suppose the Bell operator ##B=|AB(1,2)+AB(1,3)+AB(2,3)|##

With ##AB\in{1,-1}##

Nonlocal realism implies ##B\in{1,3}##

However using usual matrix sum one eigenvalues for the result of measurement can be smaller than 1, implying nonlocal realism cannot explain the quantum result.

However if the Kronecker sum is used this fact disappears.

So what would these eigenvalues mean experimentally ?

With ##AB\in{1,-1}##

Nonlocal realism implies ##B\in{1,3}##

However using usual matrix sum one eigenvalues for the result of measurement can be smaller than 1, implying nonlocal realism cannot explain the quantum result.

However if the Kronecker sum is used this fact disappears.

So what would these eigenvalues mean experimentally ?