Combining Texts

Ideas for 'What Price Bivalence?', 'Problems in Personal Identity' and 'The Laws of Thought'

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4 ideas

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 / D. Assumptions for Logic / 1. Bivalence
19043 Bivalence applies not just to sentences, but that general terms are true or false of each object [Quine]
5. Theory of Logic / D. Assumptions for Logic / 4. Identity in Logic
3299 In logic identity involves reflexivity (x=x), symmetry (if x=y, then y=x) and transitivity (if x=y and y=z, then x=z) [Baillie]
5. Theory of Logic / H. Proof Systems / 2. Axiomatic Proof
22277 Boole's method was axiomatic, achieving economy, plus multiple interpretations [Boole, by Potter]