Combining Philosophers
Ideas for Melvin Fitting, Aristotle and Ernst Mach
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9 ideas
4. Formal Logic / A. Syllogistic Logic / 1. Aristotelian Logic
11060
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Aristotelian syllogisms are three-part, subject-predicate, existentially committed, with laws of thought [Aristotle, by Hanna]
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22272
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Aristotle's later logic had to treat 'Socrates' as 'everything that is Socrates' [Potter on Aristotle]
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9405
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Square of Opposition: not both true, or not both false; one-way implication; opposite truth-values [Aristotle]
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22271
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Aristotle was the first to use schematic letters in logic [Aristotle, by Potter]
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18909
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Aristotelian sentences are made up by one of four 'formative' connectors [Aristotle, by Engelbretsen]
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8080
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Aristotelian identified 256 possible syllogisms, saying that 19 are valid [Aristotle, by Devlin]
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13912
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Aristotle replaced Plato's noun-verb form with unions of pairs of terms by one of four 'copulae' [Aristotle, by Engelbretsen/Sayward]
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8071
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Aristotle listed nineteen valid syllogisms (though a few of them were wrong) [Aristotle, by Devlin]
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4. Formal Logic / A. Syllogistic Logic / 2. Syllogistic Logic
13819
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Aristotle's said some Fs are G or some Fs are not G, forgetting that there might be no Fs [Bostock on Aristotle]
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