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Quantum Logic (Paperback, Softcover reprint of the original 1st ed. 1978)
Loot Price: R2,821
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Quantum Logic (Paperback, Softcover reprint of the original 1st ed. 1978)
Series: Synthese Library, 126
Expected to ship within 10 - 15 working days
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In 1936, G. Birkhoff and J. v. Neumann published an article with
the title The logic of quantum mechanics'. In this paper, the
authors demonstrated that in quantum mechanics the most simple
observables which correspond to yes-no propositions about a quantum
physical system constitute an algebraic structure, the most
important proper ties of which are given by an orthocomplemented
and quasimodular lattice Lq. Furthermore, this lattice of quantum
mechanical proposi tions has, from a formal point of view, many
similarities with a Boolean lattice L8 which is known to be the
lattice of classical propositional logic. Therefore, one could
conjecture that due to the algebraic structure of quantum
mechanical observables a logical calculus Q of quantum mechanical
propositions is established, which is slightly different from the
calculus L of classical propositional logic but which is applicable
to all quantum mechanical propositions (C. F. v. Weizsacker, 1955).
This calculus has sometimes been called 'quan tum logic'. However,
the statement that propositions about quantum physical systems are
governed by the laws of quantum logic, which differ from ordinary
classical logic and which are based on the empirically
well-established quantum theory, is exposed to two serious objec
tions: (a) Logic is a theory which deals with those relationships
between various propositions that are valid independent of the
content of the respective propositions. Thus, the validity of
logical relationships is not restricted to a special type of
proposition, e. g. to propositions about classical physical
systems."
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