Combining Texts
Ideas for
'Writing the Book of the World', 'Set Theory and Its Philosophy' and 'Sophistical Refutations'
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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 / 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 / A. Overview of Logic / 7. Second-Order Logic
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10704
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We can formalize second-order formation rules, but not inference rules [Potter]
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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 / 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 / E. Structures of Logic / 2. Logical Connectives / d. and
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16967
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'Are Coriscus and Callias at home?' sounds like a single question, but it isn't [Aristotle]
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5. Theory of Logic / H. Proof Systems / 3. Proof from Assumptions
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10703
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Supposing axioms (rather than accepting them) give truths, but they are conditional [Potter]
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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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