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'Logical Consequence', 'Meaning' and 'Jerry A. Fodor on himself'
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6 ideas
5. Theory of Logic / A. Overview of Logic / 4. Pure Logic
10690
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Formal logic is invariant under permutations, or devoid of content, or gives the norms for thought [Beall/Restall]
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5. Theory of Logic / B. Logical Consequence / 2. Types of Consequence
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Logical consequence needs either proofs, or absence of counterexamples [Beall/Restall]
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5. Theory of Logic / B. Logical Consequence / 4. Semantic Consequence |=
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Logical consequence is either necessary truth preservation, or preservation based on interpretation [Beall/Restall]
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5. Theory of Logic / B. Logical Consequence / 8. Material Implication
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A step is a 'material consequence' if we need contents as well as form [Beall/Restall]
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5. Theory of Logic / I. Semantics of Logic / 3. Logical Truth
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A 'logical truth' (or 'tautology', or 'theorem') follows from empty premises [Beall/Restall]
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5. Theory of Logic / J. Model Theory in Logic / 1. Logical Models
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Models are mathematical structures which interpret the non-logical primitives [Beall/Restall]
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