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Armin Ulbrich,Klaus Tochtermannts in quantum mechanics because it most evidently revealed the difference between quantum and classical physics. Now quantum measure ment is again under active investigation, first of all because of the practical necessity of dealing with highly precise and complicated measurements. The nature of q必死 发表于 2025-3-31 17:12:00
Siegfried Reichf all orthogonal projections in a Hilbert space, ., which embodies the “logic” of the quantum system. A natural example of a probability measure on projections is the restriction of a normed positive linear functional on the von Neumann algebra . of all bounded operators acting on .. Whether or not摇曳 发表于 2025-3-31 17:33:30
Frank Wagneras brought a rather surprising result: ”Natural” subspace structures of an inner product space, ., admit a nonzero completely additive measure if, and only if, . is complete. As a consequence, the probability theory on incomplete spaces is virtually empty and so the Hilbert space is the only inner p