Combining Texts

All the ideas for 'Tractatus', 'The Theory of Logical Types' and 'De aequopollentia causae et effectus'

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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]
8. Modes of Existence / C. Powers and Dispositions / 1. Powers
12735 Everything has a fixed power, as required by God, and by the possibility of reasoning [Leibniz]
9. Objects / E. Objects over Time / 10. Beginning of an Object
16706 Generation is when local motions aggregate to become a single subject [Nicholas of Autrecourt]