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Ideas for 'Mathematical Methods in Philosophy', 'How the Laws of Physics Lie' and 'Ontology'

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7 ideas

5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic

7681	Logic describes inferences between sentences expressing possible properties of objects [Jacquette]

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 / C. Ontology of Logic / 2. Platonism in Logic

7682	Logic is not just about signs, because it relates to states of affairs, objects, properties and truth-values [Jacquette]

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

18741

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

5. Theory of Logic / F. Referring in Logic / 2. Descriptions / c. Theory of definite descriptions

7697	On Russell's analysis, the sentence "The winged horse has wings" comes out as false [Jacquette]

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

18744

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

5. Theory of Logic / L. Paradox / 5. Paradoxes in Set Theory / d. Russell's paradox

7701	Can a Barber shave all and only those persons who do not shave themselves? [Jacquette]