Combining Texts

Ideas for 'fragments/reports', 'Introduction to the Philosophy of Mind' and 'The Theory of Logical Types'

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3 ideas

6. Mathematics / C. Sources of Mathematics / 6. Logicism / b. Type theory

23457

Type theory cannot identify features across levels (because such predicates break the rules) [Morris,M on Russell]

21556

Classes are defined by propositional functions, and functions are typed, with an axiom of reducibility [Russell, by Lackey]

6. Mathematics / C. Sources of Mathematics / 10. Constructivism / d. Predicativism

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A one-variable function is only 'predicative' if it is one order above its arguments [Russell]