Ideas of Bernard Linsky, by Theme
[American, fl. 1999, Professor at the University of Alberta. Son of Leonard Linsky.]
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2. Reason / D. Definition / 7. Contextual Definition
18776
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Contextual definitions eliminate descriptions from contexts
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2. Reason / D. Definition / 8. Impredicative Definition
21704
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'Impredictative' definitions fix a class in terms of the greater class to which it belongs
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4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / p. Axiom of Reducibility
21705
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Reducibility says any impredicative function has an appropriate predicative replacement
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5. Theory of Logic / F. Referring in Logic / 2. Descriptions / b. Definite descriptions
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Definite descriptions, unlike proper names, have a logical structure
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5. Theory of Logic / F. Referring in Logic / 2. Descriptions / c. Theory of definite descriptions
21727
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Definite descriptions theory eliminates the King of France, but not the Queen of England
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5. Theory of Logic / I. Semantics of Logic / 5. Extensionalism
21719
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Extensionalism means what is true of a function is true of coextensive functions
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6. Mathematics / C. Sources of Mathematics / 6. Logicism / a. Early logicism
21723
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The task of logicism was to define by logic the concepts 'number', 'successor' and '0'
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6. Mathematics / C. Sources of Mathematics / 6. Logicism / b. Type theory
21703
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Types are 'ramified' when there are further differences between the type of quantifier and its range
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21714
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The ramified theory subdivides each type, according to the range of the variables
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21721
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Higher types are needed to distinguished intensional phenomena which are coextensive
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6. Mathematics / C. Sources of Mathematics / 6. Logicism / d. Logicism critique
21713
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Did logicism fail, when Russell added three nonlogical axioms, to save mathematics?
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21715
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For those who abandon logicism, standard set theory is a rival option
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8. Modes of Existence / B. Properties / 11. Properties as Sets
21729
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Construct properties as sets of objects, or say an object must be in the set to have the property
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