Combining Texts

All the ideas for '67: Platonic Questions', 'Issues of Pragmaticism' and 'The Theory of Logical Types'

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7 ideas

5. Theory of Logic / E. Structures of Logic / 5. Functions in Logic

21566

'Propositional functions' are ambiguous until the variable is given a value [Russell]

5. Theory of Logic / L. Paradox / 6. Paradoxes in Language / a. The Liar paradox

21567

'All judgements made by Epimenedes are true' needs the judgements to be of the same type [Russell]

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

21568

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

15. Nature of Minds / A. Nature of Mind / 2. Psuche

5960	When the soul is intelligent and harmonious, it is part of god and derives from god [Plutarch]

19. Language / A. Nature of Meaning / 1. Meaning

19087

The meaning or purport of a symbol is all the rational conduct it would lead to [Peirce]