Norton, Joshua
(2014)
Weak Discernibility and Relations Between Quanta.
In: UNSPECIFIED.
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Abstract
Some authors (Muller and Saunders 2008, Huggett and Norton, 2013) have attempted to defend Leibniz's identity of indicernibes through weak discernibility. The idea is that if there is a symmetric, non-reflexive physical relation which holds between two particles, then those particles cannot be identical. In this paper I focus only on Muller and Saunders' account and argue that the means by which they achieve weak discernibility is not through a physical observable but an alternate mathematical construction which is both unorthodox and incomplete. Muller and Saunders build a map from numbers to a set of observables (mostly) and out of this map construct a weakly discerning formal relation. What Muller and Saunders' do not provide is a worked out account of how such maps pick out physical relations between particles.
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