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ilya_prigogine_isabelle_stengers_alvin_tofflerbookfi-org

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139 THE THREE STAGES OF THERMODYNAMICS<br />

of time. Therefore its time variation dS = 0 vanishes. But we<br />

have seen that the time variation of entropy is made up of two<br />

terms-the entropy flow deS and the positive entropy production<br />

diS. Therefore, dS=O implies that deS= -diS

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