Combining Philosophers
Ideas for Dennis Whitcomb, Alan Musgrave and R.D. Ingthorsson
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5 ideas
5. Theory of Logic / A. Overview of Logic / 5. First-Order Logic
22609
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Philosophers accepted first-order logic, because they took science to be descriptive, not explanatory [Ingthorsson]
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5. Theory of Logic / C. Ontology of Logic / 3. If-Thenism
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The If-thenist view only seems to work for the axiomatised portions of mathematics [Musgrave]
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10065
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Perhaps If-thenism survives in mathematics if we stick to first-order logic [Musgrave]
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5. Theory of Logic / I. Semantics of Logic / 3. Logical Truth
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Logical truths may contain non-logical notions, as in 'all men are men' [Musgrave]
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10050
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A statement is logically true if it comes out true in all interpretations in all (non-empty) domains [Musgrave]
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