Combining Texts
Ideas for
'Introduction to 'Virtues of Authenticity'', 'Modal Logics and Philosophy' and 'Word and Object'
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3 ideas
5. Theory of Logic / B. Logical Consequence / 7. Strict Implication
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Necessary implication is called 'strict implication'; if successful, it is called 'entailment' [Girle]
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5. Theory of Logic / G. Quantification / 6. Plural Quantification
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Plurals can in principle be paraphrased away altogether [Quine]
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5. Theory of Logic / H. Proof Systems / 5. Tableau Proof
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If an argument is invalid, a truth tree will indicate a counter-example [Girle]
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