Combining Texts
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'Classical Cosmology (frags)', 'Guide to Ground' and 'Intellectual Autobiography'
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5 ideas
5. Theory of Logic / B. Logical Consequence / 1. Logical Consequence
17286
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Logical consequence is verification by a possible world within a truth-set [Fine,K]
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5. Theory of Logic / D. Assumptions for Logic / 4. Identity in Logic
18897
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Predicate logic has to spell out that its identity relation '=' is an equivalent relation [Sommers]
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5. Theory of Logic / E. Structures of Logic / 1. Logical Form
18893
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Translating into quantificational idiom offers no clues as to how ordinary thinkers reason [Sommers]
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5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / c. not
18903
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Sommers promotes the old idea that negation basically refers to terms [Sommers, by Engelbretsen]
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5. Theory of Logic / E. Structures of Logic / 7. Predicates in Logic
18894
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Predicates form a hierarchy, from the most general, down to names at the bottom [Sommers]
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