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Were there other related definitions defined around this time? In physics textbooks, vectors are introduced first, and then vector fields; given the complexity of the notion of tensors, one would suppose tensors would then be introduced and then tensor fields. Instead, a quite complex and obscure definition of a tensor field (and not a tensor) is presented ...


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In the strict sense, quantum logic is a non-distributive consequence relation, not a geometry or an algebra. In this sense of quantum logic, von Neumann abandoned his interest in it (and in the Hilbert state formulation of quantum mechanics more generally), after 1936, and shifted it to type II factor algebras (which we now call von Neumann algebras). I'd ...


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