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I have added
and added publication details to
and grouped together more discernibly the references on operator-algebraic entropy
Thanks for the alert. Could you say which section of the entry you are referring to, and/or which equation? – I have now made all equations carry a numbering.
In quantum mechanics, the basic notion is the von Neumann entropy defined in terms of density matrix. For type III von Neumann algebras the density matrix is not well defined (physically, the problem is usually in ultraviolet divergences). Von Neumann entropy is generalized to arbitrary semifinite von Neumann algebra in
…
A note relating Irving Segal’s notion to relative entropy is
(Please check)
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