Combining Texts

Ideas for 'Two Notions of Being: Entity and Essence', 'Noneism or Allism?' and 'Mathematical Methods in Philosophy'

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5 ideas

5. Theory of Logic / A. Overview of Logic / 9. Philosophical Logic

18739

Three stages of philosophical logic: syntactic (1905-55), possible worlds (1963-85), widening (1990-) [Horsten/Pettigrew]

5. Theory of Logic / E. Structures of Logic / 1. Logical Form

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Logical formalization makes concepts precise, and also shows their interrelation [Horsten/Pettigrew]

5. Theory of Logic / G. Quantification / 4. Substitutional Quantification

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We can quantify over fictions by quantifying for real over their names [Lewis]

5. Theory of Logic / G. Quantification / 7. Unorthodox Quantification

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We could quantify over impossible objects - as bundles of properties [Lewis]

5. Theory of Logic / J. Model Theory in Logic / 1. Logical Models

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Models are sets with functions and relations, and truth built up from the components [Horsten/Pettigrew]