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Generalized quantum operations and almost sharp quantum effects. (English) Zbl 1381.81017
Summary: We study generalized quantum operations and almost sharp quantum effects, our results generalize and improve some important conclusions in [A. Arias et al., J. Math. Phys. 43, No. 12, 5872–5881 (2002; Zbl 1060.81009)] and [A. Arias and S. Gudder, J. Math. Phys. 45, No. 11, 4196–4206 (2004; Zbl 1064.81003)].

MSC:
81P10 Logical foundations of quantum mechanics; quantum logic (quantum-theoretic aspects)
08A55 Partial algebras
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