Abstract
To this point we have examined two situations in which the entropy of a reversible system may appear to increase. In the first (coarse graining, Chapter 8), we have a transformation operating precisely but are unable to measure the dynamical variables with perfect accuracy. The second situation (taking a trace, Chapter 9) assumed that we did not have access to all of the dynamical variables, but only to a subset of them. In both situations, the system is closed in that there are no external influences acting on the system.
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© 1992 Springer Science+Business Media New York
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Mackey, M.C. (1992). Open Discrete Time Systems. In: Time’s Arrow: The Origins of Thermodynamic Behavior. Springer Study Edition. Springer, New York, NY. https://doi.org/10.1007/978-1-4613-9524-9_10
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DOI: https://doi.org/10.1007/978-1-4613-9524-9_10
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