Combining Texts

All the ideas for 'fragments/reports', 'Occasions of Identity' and 'The Laws of Thought'

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10 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 / B. Unity of Objects / 3. Unity Problems / b. Cat and its tail

13437

A CAR and its major PART can become identical, yet seem to have different properties [Gallois]

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

16233

Gallois hoped to clarify identity through time, but seems to make talk of it impossible [Hawley on Gallois]

9. Objects / F. Identity among Objects / 3. Relative Identity

14755

Gallois is committed to identity with respect to times, and denial of simple identity [Gallois, by Sider]

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

16231

Occasional Identity: two objects can be identical at one time, and different at others [Gallois, by Hawley]

25. Social Practice / E. Policies / 5. Education / b. Education principles

13304

Learned men gain more in one day than others do in a lifetime [Posidonius]

27. Natural Reality / D. Time / 1. Nature of Time / d. Time as measure

20820

Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus]