Combining Texts
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'Cognition of Value in Aristotle's Ethics', 'A Tour through Mathematical Logic' and 'Real Essence'
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4. Formal Logic / C. Predicate Calculus PC / 2. Tools of Predicate Calculus / d. Universal quantifier ∀
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Universal Generalization: If we prove P(x) with no special assumptions, we can conclude ∀xP(x) [Wolf,RS]
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Universal Specification: ∀xP(x) implies P(t). True for all? Then true for an instance [Wolf,RS]
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4. Formal Logic / C. Predicate Calculus PC / 2. Tools of Predicate Calculus / e. Existential quantifier ∃
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Existential Generalization (or 'proof by example'): if we can say P(t), then we can say something is P [Wolf,RS]
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