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Ideas for 'Axiomatic Theories of Truth (2005 ver)', 'Negation' and 'Letters to Antoine Arnauld'

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5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives

18782

The connectives are studied either through model theory or through proof theory [Mares]

5. Theory of Logic / E. Structures of Logic / 7. Predicates in Logic

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Instead of saying x has a property, we can say a formula is true of x - as long as we have 'true' [Halbach]