A simple derivation of the strong subadditivity inequalities
Abstract
In this short note, we give a simple derivation of the strong subadditivity inequalities: S(13) + S(23) S(1) + S(2) and S(12) + S(23) S(2) + S(123). The simplicity is due to the way we represent the quantum systems. We make a few remarks about such a representation.
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