Oppositions and quantum mechanics

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Arenhart, Jonas R. B.; Krause, Décio
preprint description
In this paper we deal with two applications of the square of opposition to controversial issues in the philosophy of quantum mechanics. The first one concerns the kind of opposition represented by states in superposition. A superposition of “spin up” and “spin down” for a given spatial direction, for instance, is sometimes said to originate particular kinds of opposition such as contradictoriness. The second application concerns the problem of identical particles. Identity and indiscernibility are entangled in discussions of this problem in such a way that a proper conceptual treatment of those issues through the square seems profitable.