Combining Texts

All the ideas for 'The Blue and Brown Notebooks', 'Identity over Time' and 'The Laws of Thought'

expand these ideas     |    start again     |     specify just one area for these texts

---

9 ideas

4. Formal Logic / B. Propositional Logic PL / 1. Propositional Logic

8083	Boole applied normal algebra to logic, aiming at an algebra of thought [Boole, by Devlin]

7727	Boole's notation can represent syllogisms and propositional arguments, but not both at once [Boole, by Weiner]

5. Theory of Logic / A. Overview of Logic / 2. History of Logic

8686	Boole made logic more mathematical, with algebra, quantifiers and probability [Boole, by Friend]

5. Theory of Logic / H. Proof Systems / 2. Axiomatic Proof

22277

Boole's method was axiomatic, achieving economy, plus multiple interpretations [Boole, by Potter]

9. Objects / E. Objects over Time / 1. Objects over Time

16025

If things change they become different - but then no one thing undergoes the change! [Gallois]

9. Objects / E. Objects over Time / 4. Four-Dimensionalism

16026

4D: time is space-like; a thing is its history; past and future are real; or things extend in time [Gallois]

9. Objects / F. Identity among Objects / 6. Identity between Objects

16027

If two things are equal, each side involves a necessity, so the equality is necessary [Gallois]

16. Persons / D. Continuity of the Self / 3. Reference of 'I'

22419

'I' is a subject in 'I am in pain' and an object in 'I am bleeding' [Wittgenstein, by McGinn]

19. Language / F. Communication / 6. Interpreting Language / b. Indeterminate translation

6318	The doctrine of indeterminacy of translation seems implied by the later Wittgenstein [Wittgenstein, by Quine]