Identity and discernibility in philosophy and logic

Review of Symbolic Logic 5 (1):162-186 (2012)
Abstract
Questions about the relation between identity and discernibility are important both in philosophy and in model theory. We show how a philosophical question about identity and dis- cernibility can be ‘factorized’ into a philosophical question about the adequacy of a formal language to the description of the world, and a mathematical question about discernibility in this language. We provide formal definitions of various notions of discernibility and offer a complete classification of their logical relations. Some new and surprising facts are proved; for instance, that weak dis- cernibility corresponds to discernibility in a language with constants for every object, and that weak discernibility is the most discerning nontrivial discernibility relation
Keywords structuralism   discernibility   identity
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    References found in this work BETA
    Alan Baker (2003). Quantitative Parsimony and Explanatory Power. British Journal for the Philosophy of Science 54 (2):245-259.

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