Combining Philosophers

All the ideas for Theophrastus, George Boole and Anon (Plat)

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

7 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]
13. Knowledge Criteria / E. Relativism / 6. Relativism Critique
20921 How can we state relativism of sweet and sour, if they have no determinate nature? [Theophrastus]
17. Mind and Body / A. Mind-Body Dualism / 1. Dualism
3519 Man uses his body, so must be separate from it [Anon (Plat), by Maslin]
26. Natural Theory / A. Speculations on Nature / 2. Natural Purpose / c. Purpose denied
5990 Theophrastus doubted whether nature could be explained teleologically [Theophrastus, by Gottschalk]