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'works', 'Recent Aesthetics in England and America' and 'works'
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5 ideas
5. Theory of Logic / A. Overview of Logic / 2. History of Logic
11022
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Gentzen introduced a natural deduction calculus (NK) in 1934 [Gentzen, by Read]
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5. Theory of Logic / E. Structures of Logic / 1. Logical Form
4730
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For Aristotle, the subject-predicate structure of Greek reflected a substance-accident structure of reality [Aristotle, by O'Grady]
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5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives
11065
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The inferential role of a logical constant constitutes its meaning [Gentzen, by Hanna]
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11023
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The logical connectives are 'defined' by their introduction rules [Gentzen]
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11213
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Each logical symbol has an 'introduction' rule to define it, and hence an 'elimination' rule [Gentzen]
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