Abstract:Mathematicians and philosophers have appealed to categoricity arguments in a surprisingly varied range of contexts. One familiar example calls on second-order categoricity in an attempt to show that the Continuum Hypothesis, despite its formal independence, has a determinate truth value, but this doesn't exhaust the uses of categoricity even in set theory, not to mention its appearance in various roles in discussions of arithmetic. Here we compare and contrast a sampling of these deployments to get a sense of … Show more
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