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Ideas of Engelbretsen,G/Sayward,C, by Text
[, fl. 2011, two professors of logic.]
2011
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Philosophical Logic: Intro to Advanced Topics
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Intro
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p.2
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13849
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Classical logic rests on truth and models, where constructivist logic rests on defence and refutation
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7
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p.132
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13852
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Axioms are ω-incomplete if the instances are all derivable, but the universal quantification isn't
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8
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p.142
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13913
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The four 'perfect syllogisms' are called Barbara, Celarent, Darii and Ferio
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8
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p.143
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13914
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Syllogistic logic has one rule: what is affirmed/denied of wholes is affirmed/denied of their parts
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8
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p.144
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13915
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Syllogistic can't handle sentences with singular terms, or relational terms, or compound sentences
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8
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p.146
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13916
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Term logic uses expression letters and brackets, and '-' for negative terms, and '+' for compound terms
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Ch.2
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p.50
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13850
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In modern logic all formal validity can be characterised syntactically
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Ch.3
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p.70
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13851
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Unlike most other signs, = cannot be eliminated
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