Combining Texts
Ideas for
'works', 'Formal and Material Consequence' and 'Existence and Quantification'
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8 ideas
5. Theory of Logic / A. Overview of Logic / 4. Pure Logic
14187
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If logic is topic-neutral that means it delves into all subjects, rather than having a pure subject matter [Read]
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5. Theory of Logic / A. Overview of Logic / 7. Second-Order Logic
8789
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Various strategies try to deal with the ontological commitments of second-order logic [Hale/Wright on Quine]
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5. Theory of Logic / B. Logical Consequence / 1. Logical Consequence
14188
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Not all arguments are valid because of form; validity is just true premises and false conclusion being impossible [Read]
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14182
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If the logic of 'taller of' rests just on meaning, then logic may be the study of merely formal consequence [Read]
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14183
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Maybe arguments are only valid when suppressed premises are all stated - but why? [Read]
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5. Theory of Logic / B. Logical Consequence / 5. Modus Ponens
14184
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In modus ponens the 'if-then' premise contributes nothing if the conclusion follows anyway [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
14186
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Logical connectives contain no information, but just record combination relations between facts [Read]
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