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'Writing the Book of the World', 'The Quest for Certainty' and 'works'
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9 ideas
5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic
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14980
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There is a real issue over what is the 'correct' logic [Sider]
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15000
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'It is raining' and 'it is not raining' can't be legislated, so we can't legislate 'p or ¬p' [Sider]
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5. Theory of Logic / A. Overview of Logic / 4. Pure Logic
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10048
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There is no clear boundary between the logical and the non-logical [Tarski]
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5. Theory of Logic / A. Overview of Logic / 6. Classical Logic
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15020
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Classical logic is good for mathematics and science, but less good for natural language [Sider]
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5. Theory of Logic / B. Logical Consequence / 1. Logical Consequence
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15029
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Modal accounts of logical consequence are simple necessity, or essential use of logical words [Sider]
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5. Theory of Logic / B. Logical Consequence / 4. Semantic Consequence |=
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10694
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Logical consequence is when in any model in which the premises are true, the conclusion is true [Tarski, by Beall/Restall]
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10479
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Logical consequence: true premises give true conclusions under all interpretations [Tarski, by Hodges,W]
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5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives
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15019
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Define logical constants by role in proofs, or as fixed in meaning, or as topic-neutral [Sider]
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5. Theory of Logic / H. Proof Systems / 4. Natural Deduction
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15001
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'Tonk' is supposed to follow the elimination and introduction rules, but it can't be so interpreted [Sider]
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