Combining Philosophers
Ideas for Peter E. Pormann, Thomas M. Crisp and Rudolph Carnap
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2 ideas
5. Theory of Logic / B. Logical Consequence / 1. Logical Consequence
13342
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Carnap defined consequence by contradiction, but this is unintuitive and changes with substitution [Tarski on Carnap]
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5. Theory of Logic / C. Ontology of Logic / 4. Logic by Convention
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Each person is free to build their own logic, just by specifying a syntax [Carnap]
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