Combining Texts
Ideas for
'Metaphysics', 'Nature's Metaphysics' and 'Darwinian Metaphysics: Species and Essentialism'
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3 ideas
4. Formal Logic / B. Propositional Logic PL / 2. Tools of Propositional Logic / e. Axioms of PL
562
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Axioms are the underlying principles of everything, and who but the philosopher can assess their truth? [Aristotle]
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573
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The axioms of mathematics are part of philosophy [Aristotle]
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4. Formal Logic / D. Modal Logic ML / 7. Barcan Formula
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The plausible Barcan formula implies modality in the actual world [Bird]
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